977890317 has 8 divisors (see below), whose sum is σ = 1305134880. Its totient is φ = 651286320.

The previous prime is 977890283. The next prime is 977890321. The reversal of 977890317 is 713098779.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 977890317 - 2⁶ = 977890253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 977890317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977890387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156567 + ... + 162692.

It is an arithmetic number, because the mean of its divisors is an integer number (163141860).

Almost surely, 2^977890317 is an apocalyptic number.

It is an amenable number.

977890317 is a deficient number, since it is larger than the sum of its proper divisors (327244563).

977890317 is a wasteful number, since it uses less digits than its factorization.

977890317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320283.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 977890317 is about 31271.2378552561. The cubic root of 977890317 is about 992.5751131642.

The spelling of 977890317 in words is "nine hundred seventy-seven million, eight hundred ninety thousand, three hundred seventeen".