77673764 has 12 divisors (see below), whose sum is σ = 155347584. Its totient is φ = 33288744.

The previous prime is 77673733. The next prime is 77673773. The reversal of 77673764 is 46737677.

It is a happy number.

77673764 is an admirable number.

It is a super-2 number, since 2×77673764² = 12066427227855392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387004 + ... + 1387059.

It is an arithmetic number, because the mean of its divisors is an integer number (12945632).

Almost surely, 2^77673764 is an apocalyptic number.

It is an amenable number.

77673764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77673764 is a wasteful number, since it uses less digits than its factorization.

77673764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774074 (or 2774072 counting only the distinct ones).

The product of its digits is 1037232, while the sum is 47.

The square root of 77673764 is about 8813.2720371040. The cubic root of 77673764 is about 426.6693540955.

The spelling of 77673764 in words is "seventy-seven million, six hundred seventy-three thousand, seven hundred sixty-four".