977216680 has 64 divisors (see below), whose sum is σ = 2401876800. Its totient is φ = 354869760.

The previous prime is 977216677. The next prime is 977216687. The reversal of 977216680 is 86612779.

It is a happy number.

977216680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 977216680.

It is not an unprimeable number, because it can be changed into a prime (977216687) 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, 566299 + ... + 568021.

It is an arithmetic number, because the mean of its divisors is an integer number (37529325).

Almost surely, 2^977216680 is an apocalyptic number.

It is an amenable number.

977216680 is an abundant number, since it is smaller than the sum of its proper divisors (1424660120).

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

977216680 is a wasteful number, since it uses less digits than its factorization.

977216680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 977216680 is about 31260.4651276976. The cubic root of 977216680 is about 992.3471431822.

It can be divided in two parts, 97721 and 6680, that added together give a palindrome (104401).

The spelling of 977216680 in words is "nine hundred seventy-seven million, two hundred sixteen thousand, six hundred eighty".