977692013 has 4 divisors (see below), whose sum is σ = 978589248. Its totient is φ = 976794780.

The previous prime is 977691997. The next prime is 977692021. The reversal of 977692013 is 310296779.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 977692013 - 2⁴ = 977691997 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 (977692913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446981 + ... + 449162.

It is an arithmetic number, because the mean of its divisors is an integer number (244647312).

Almost surely, 2^977692013 is an apocalyptic number.

It is an amenable number.

977692013 is a deficient number, since it is larger than the sum of its proper divisors (897235).

977692013 is a wasteful number, since it uses less digits than its factorization.

977692013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897234.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 977692013 is about 31268.0669853446. The cubic root of 977692013 is about 992.5080146637.

The spelling of 977692013 in words is "nine hundred seventy-seven million, six hundred ninety-two thousand, thirteen".