76684540 has 12 divisors (see below), whose sum is σ = 161037576. Its totient is φ = 30673808.

The previous prime is 76684537. The next prime is 76684549. The reversal of 76684540 is 4548667.

76684540 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

76684540 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 76684493 and 76684502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76684549) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1917094 + ... + 1917133.

It is an arithmetic number, because the mean of its divisors is an integer number (13419798).

Almost surely, 2^76684540 is an apocalyptic number.

It is an amenable number.

76684540 is an abundant number, since it is smaller than the sum of its proper divisors (84353036).

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

76684540 is a wasteful number, since it uses less digits than its factorization.

76684540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834236 (or 3834234 counting only the distinct ones).

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

The square root of 76684540 is about 8756.9709374875. The cubic root of 76684540 is about 424.8503094516.

The spelling of 76684540 in words is "seventy-six million, six hundred eighty-four thousand, five hundred forty".