76481564 has 24 divisors (see below), whose sum is σ = 138354048. Its totient is φ = 36968960.

The previous prime is 76481519. The next prime is 76481569. The reversal of 76481564 is 46518467.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76481569) 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, 16469 + ... + 20595.

It is an arithmetic number, because the mean of its divisors is an integer number (5764752).

Almost surely, 2^76481564 is an apocalyptic number.

It is an amenable number.

76481564 is a deficient number, since it is larger than the sum of its proper divisors (61872484).

76481564 is a wasteful number, since it uses less digits than its factorization.

76481564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285 (or 4283 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 76481564 is about 8745.3738627917. The cubic root of 76481564 is about 424.4751333818.

It can be divided in two parts, 764 and 81564, that added together give a palindrome (82328).

The spelling of 76481564 in words is "seventy-six million, four hundred eighty-one thousand, five hundred sixty-four".