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70002061 = 1931157757
BaseRepresentation
bin1000010110000…
…10010110001101
311212201110202221
410023002112031
5120410031221
610540215341
71510002433
oct413022615
9155643687
1070002061
1136572648
121b53a551
131166c74c
149422d53
15622b541
hex42c258d

70002061 has 16 divisors (see below), whose sum is σ = 76648960. Its totient is φ = 63685440.

The previous prime is 70002043. The next prime is 70002131. The reversal of 70002061 is 16020007.

It is a cyclic number.

It is not a de Polignac number, because 70002061 - 217 = 69870989 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 (70002001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92095 + ... + 92851.

It is an arithmetic number, because the mean of its divisors is an integer number (4790560).

Almost surely, 270002061 is an apocalyptic number.

It is an amenable number.

70002061 is a deficient number, since it is larger than the sum of its proper divisors (6646899).

70002061 is a wasteful number, since it uses less digits than its factorization.

70002061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 70002061 is about 8366.7234327424. The cubic root of 70002061 is about 412.1325746883.

Adding to 70002061 its reverse (16020007), we get a palindrome (86022068).

The spelling of 70002061 in words is "seventy million, two thousand, sixty-one".

Divisors: 1 19 31 157 589 757 2983 4867 14383 23467 92473 118849 445873 2258131 3684319 70002061