76515013 has 4 divisors (see below), whose sum is σ = 78143040. Its totient is φ = 74886988.

The previous prime is 76515007. The next prime is 76515029. The reversal of 76515013 is 31051567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31051567 = 19 ⋅1634293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76515013 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 (76515073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813943 + ... + 814036.

It is an arithmetic number, because the mean of its divisors is an integer number (19535760).

Almost surely, 2^76515013 is an apocalyptic number.

It is an amenable number.

76515013 is a deficient number, since it is larger than the sum of its proper divisors (1628027).

76515013 is a wasteful number, since it uses less digits than its factorization.

76515013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628026.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 76515013 is about 8747.2860362515. The cubic root of 76515013 is about 424.5370053705.

The spelling of 76515013 in words is "seventy-six million, five hundred fifteen thousand, thirteen".