977147864 has 64 divisors (see below), whose sum is σ = 2301868800. Its totient is φ = 377769600.

The previous prime is 977147839. The next prime is 977147891. The reversal of 977147864 is 468741779.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74642 + ... + 86750.

It is an arithmetic number, because the mean of its divisors is an integer number (35966700).

Almost surely, 2^977147864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977147864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150934400).

977147864 is an abundant number, since it is smaller than the sum of its proper divisors (1324720936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977147864 is a wasteful number, since it uses less digits than its factorization.

977147864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12264 (or 12260 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 53.

The square root of 977147864 is about 31259.3644209219. The cubic root of 977147864 is about 992.3238488042.

It can be divided in two parts, 977 and 147864, that added together give a palindrome (148841).

The spelling of 977147864 in words is "nine hundred seventy-seven million, one hundred forty-seven thousand, eight hundred sixty-four".