76977081 has 16 divisors (see below), whose sum is σ = 114262720. Its totient is φ = 51217920.

The previous prime is 76977077. The next prime is 76977083. The reversal of 76977081 is 18077967.

It is a happy number.

It is not a de Polignac number, because 76977081 - 2² = 76977077 is a prime.

It is a super-2 number, since 2×76977081² = 11850941998561122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76977083) 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, 12921 + ... + 17913.

It is an arithmetic number, because the mean of its divisors is an integer number (7141420).

Almost surely, 2^76977081 is an apocalyptic number.

It is an amenable number.

76977081 is a deficient number, since it is larger than the sum of its proper divisors (37285639).

76977081 is a wasteful number, since it uses less digits than its factorization.

76977081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573 (or 5567 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 76977081 is about 8773.6583589743. The cubic root of 76977081 is about 425.3898724615.

The spelling of 76977081 in words is "seventy-six million, nine hundred seventy-seven thousand, eighty-one".