76644568 has 128 divisors (see below), whose sum is σ = 204664320. Its totient is φ = 25896960.

The previous prime is 76644559. The next prime is 76644611. The reversal of 76644568 is 86544667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135855 + ... + 136417.

It is an arithmetic number, because the mean of its divisors is an integer number (1598940).

Almost surely, 2^76644568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76644568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102332160).

76644568 is an abundant number, since it is smaller than the sum of its proper divisors (128019752).

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

76644568 is a wasteful number, since it uses less digits than its factorization.

76644568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 76644568 is about 8754.6883439675. The cubic root of 76644568 is about 424.7764785418.

Subtracting 76644568 from its reverse (86544667), we obtain a palindrome (9900099).

The spelling of 76644568 in words is "seventy-six million, six hundred forty-four thousand, five hundred sixty-eight".