77136976 has 30 divisors (see below), whose sum is σ = 173855130. Its totient is φ = 33058368.

The previous prime is 77136967. The next prime is 77136989. The reversal of 77136976 is 67963177.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42562576 + 34574400 = 6524^2 + 5880^2 .

It is a super-2 number, since 2×77136976² = 11900226132849152, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48411 + ... + 49978.

It is an arithmetic number, because the mean of its divisors is an integer number (5795171).

Almost surely, 2^77136976 is an apocalyptic number.

It is an amenable number.

77136976 is an abundant number, since it is smaller than the sum of its proper divisors (96718154).

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

77136976 is a wasteful number, since it uses less digits than its factorization.

77136976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98411 (or 98398 counting only the distinct ones).

The product of its digits is 333396, while the sum is 46.

The square root of 77136976 is about 8782.7658513705. The cubic root of 77136976 is about 425.6842054071.

The spelling of 77136976 in words is "seventy-seven million, one hundred thirty-six thousand, nine hundred seventy-six".