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7080701021 = 26437267833
BaseRepresentation
bin1101001100000101…
…01110110001011101
3200021110120212202222
412212002232301131
5104000124413041
63130335555125
7340315652132
oct64602566135
920243525688
107080701021
113003964529
12145738baa5
1388ac50424
144b2566589
152b695a74b
hex1a60aec5d

7080701021 has 4 divisors (see below), whose sum is σ = 7080995292. Its totient is φ = 7080406752.

The previous prime is 7080700999. The next prime is 7080701029. The reversal of 7080701021 is 1201070807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1201070807 = 1963214253.

It can be written as a sum of positive squares in 2 ways, for example, as 2686867225 + 4393833796 = 51835^2 + 66286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-7080701021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7080701029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107480 + ... + 160353.

It is an arithmetic number, because the mean of its divisors is an integer number (1770248823).

Almost surely, 27080701021 is an apocalyptic number.

It is an amenable number.

7080701021 is a deficient number, since it is larger than the sum of its proper divisors (294271).

7080701021 is a wasteful number, since it uses less digits than its factorization.

7080701021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294270.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 7080701021 is about 84146.9014343368. The cubic root of 7080701021 is about 1920.2543265711.

Adding to 7080701021 its reverse (1201070807), we get a palindrome (8281771828).

The spelling of 7080701021 in words is "seven billion, eighty million, seven hundred one thousand, twenty-one".

Divisors: 1 26437 267833 7080701021