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6750061 = 65310337
BaseRepresentation
bin11001101111111101101101
3110200221100021
4121233331231
53212000221
6400402141
7111242323
oct31577555
913627307
106750061
1138a046a
122316351
131524526
14c79d13
158d5041
hex66ff6d

6750061 has 4 divisors (see below), whose sum is σ = 6761052. Its totient is φ = 6739072.

The previous prime is 6750059. The next prime is 6750067. The reversal of 6750061 is 1600576.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 5929225 = 906^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 6750061 - 21 = 6750059 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6750067) 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, 4516 + ... + 5821.

It is an arithmetic number, because the mean of its divisors is an integer number (1690263).

Almost surely, 26750061 is an apocalyptic number.

It is an amenable number.

6750061 is a deficient number, since it is larger than the sum of its proper divisors (10991).

6750061 is a wasteful number, since it uses less digits than its factorization.

6750061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 6750061 is about 2598.0879507823. The cubic root of 6750061 is about 188.9887267802.

The spelling of 6750061 in words is "six million, seven hundred fifty thousand, sixty-one".

Divisors: 1 653 10337 6750061