977197968 has 120 divisors (see below), whose sum is σ = 2888381600. Its totient is φ = 307556352.

The previous prime is 977197951. The next prime is 977197973. The reversal of 977197968 is 869791779.

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 23 ways as a sum of consecutive naturals, for example, 1578363 + ... + 1578981.

Almost surely, 2^977197968 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 977197968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444190800).

977197968 is an abundant number, since it is smaller than the sum of its proper divisors (1911183632).

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

977197968 is a wasteful number, since it uses less digits than its factorization.

977197968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1220 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 63.

The square root of 977197968 is about 31260.1658344929. The cubic root of 977197968 is about 992.3408092344.

It can be divided in two parts, 97 and 7197968, that multiplied together give a palindrome (698202896).

The spelling of 977197968 in words is "nine hundred seventy-seven million, one hundred ninety-seven thousand, nine hundred sixty-eight".