76778992 has 40 divisors (see below), whose sum is σ = 152945072. Its totient is φ = 37324800.

The previous prime is 76778963. The next prime is 76779011. The reversal of 76778992 is 29987767.

It is a super-2 number, since 2×76778992² = 11790027225072128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94267 + ... + 95077.

Almost surely, 2^76778992 is an apocalyptic number.

It is an amenable number.

76778992 is a deficient number, since it is larger than the sum of its proper divisors (76166080).

76778992 is a wasteful number, since it uses less digits than its factorization.

76778992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 971 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 55.

The square root of 76778992 is about 8762.3622385747. The cubic root of 76778992 is about 425.0246666191.

The spelling of 76778992 in words is "seventy-six million, seven hundred seventy-eight thousand, nine hundred ninety-two".