77976956 has 12 divisors (see below), whose sum is σ = 137146800. Its totient is φ = 38792160.

The previous prime is 77976953. The next prime is 77976959. The reversal of 77976956 is 65967977.

It is an interprime number because it is at equal distance from previous prime (77976953) and next prime (77976959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77976953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48185 + ... + 49776.

It is an arithmetic number, because the mean of its divisors is an integer number (11428900).

Almost surely, 2^77976956 is an apocalyptic number.

It is an amenable number.

77976956 is a deficient number, since it is larger than the sum of its proper divisors (59169844).

77976956 is a wasteful number, since it uses less digits than its factorization.

77976956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98164 (or 98162 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 56.

The square root of 77976956 is about 8830.4561603577. The cubic root of 77976956 is about 427.2237874671.

The spelling of 77976956 in words is "seventy-seven million, nine hundred seventy-six thousand, nine hundred fifty-six".