76856544 has 36 divisors (see below), whose sum is σ = 218561616. Its totient is φ = 25618752.

The previous prime is 76856543. The next prime is 76856551. The reversal of 76856544 is 44565867.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 76856544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76856543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133144 + ... + 133719.

It is an arithmetic number, because the mean of its divisors is an integer number (6071156).

Almost surely, 2^76856544 is an apocalyptic number.

It is an amenable number.

76856544 is an abundant number, since it is smaller than the sum of its proper divisors (141705072).

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

76856544 is a wasteful number, since it uses less digits than its factorization.

76856544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266879 (or 266868 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 76856544 is about 8766.7864123634. The cubic root of 76856544 is about 425.1677197318.

The spelling of 76856544 in words is "seventy-six million, eight hundred fifty-six thousand, five hundred forty-four".