76405684 has 24 divisors (see below), whose sum is σ = 142135560. Its totient is φ = 35813376.

The previous prime is 76405663. The next prime is 76405687. The reversal of 76405684 is 48650467.

It can be written as a sum of positive squares in 4 ways, for example, as 19554084 + 56851600 = 4422^2 + 7540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76405687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16204 + ... + 20380.

It is an arithmetic number, because the mean of its divisors is an integer number (5922315).

Almost surely, 2^76405684 is an apocalyptic number.

It is an amenable number.

76405684 is a deficient number, since it is larger than the sum of its proper divisors (65729876).

76405684 is a wasteful number, since it uses less digits than its factorization.

76405684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467 (or 4465 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 76405684 is about 8741.0344925529. The cubic root of 76405684 is about 424.3347081200.

The spelling of 76405684 in words is "seventy-six million, four hundred five thousand, six hundred eighty-four".