977628660 has 48 divisors (see below), whose sum is σ = 2881435200. Its totient is φ = 246979584.

The previous prime is 977628581. The next prime is 977628661. The reversal of 977628660 is 66826779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977628661) by changing a digit.

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, 427645 + ... + 429924.

It is an arithmetic number, because the mean of its divisors is an integer number (60029900).

Almost surely, 2^977628660 is an apocalyptic number.

It is an amenable number.

977628660 is an abundant number, since it is smaller than the sum of its proper divisors (1903806540).

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

977628660 is a wasteful number, since it uses less digits than its factorization.

977628660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857600 (or 857598 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 977628660 is about 31267.0539066283. The cubic root of 977628660 is about 992.4865765156.

The spelling of 977628660 in words is "nine hundred seventy-seven million, six hundred twenty-eight thousand, six hundred sixty".