977867565 has 16 divisors (see below), whose sum is σ = 1615059456. Its totient is φ = 504705600.

The previous prime is 977867551. The next prime is 977867567. The reversal of 977867565 is 565768779.

It is not a de Polignac number, because 977867565 - 2⁴ = 977867549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 977867499 and 977867508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977867567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051006 + ... + 1051935.

It is an arithmetic number, because the mean of its divisors is an integer number (100941216).

Almost surely, 2^977867565 is an apocalyptic number.

It is an amenable number.

977867565 is a deficient number, since it is larger than the sum of its proper divisors (637191891).

977867565 is a wasteful number, since it uses less digits than its factorization.

977867565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102980.

The product of its digits is 22226400, while the sum is 60.

The square root of 977867565 is about 31270.8740683723. The cubic root of 977867565 is about 992.5674152170.

The spelling of 977867565 in words is "nine hundred seventy-seven million, eight hundred sixty-seven thousand, five hundred sixty-five".