76559013 has 20 divisors (see below), whose sum is σ = 117160428. Its totient is φ = 49792320.

The previous prime is 76559011. The next prime is 76559017. The reversal of 76559013 is 31095567.

It is a happy number.

76559013 is a `hidden beast` number, since 7 + 65 + 590 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27531009 + 49028004 = 5247^2 + 7002^2 .

It is not a de Polignac number, because 76559013 - 2¹ = 76559011 is a prime.

It is a super-2 number, since 2×76559013² = 11722564943068338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76559011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8206 + ... + 14847.

Almost surely, 2^76559013 is an apocalyptic number.

It is an amenable number.

76559013 is a deficient number, since it is larger than the sum of its proper divisors (40601415).

76559013 is a wasteful number, since it uses less digits than its factorization.

76559013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23106 (or 23097 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 76559013 is about 8749.8007405883. The cubic root of 76559013 is about 424.6183665224.

The spelling of 76559013 in words is "seventy-six million, five hundred fifty-nine thousand, thirteen".