766625344 has 21 divisors (see below), whose sum is σ = 1521711841. Its totient is φ = 383201920.

The previous prime is 766625333. The next prime is 766625359. The reversal of 766625344 is 443526667.

The square root of 766625344 is 27688.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 151585344 + 615040000 = 12312^2 + 24800^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766625344.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 219774 + ... + 223234.

Almost surely, 2^766625344 is an apocalyptic number.

766625344 is the 27688-th square number.

It is an amenable number.

766625344 is a deficient number, since it is larger than the sum of its proper divisors (755086497).

766625344 is an frugal number, since it uses more digits than its factorization.

766625344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934 (or 3463 counting only the distinct ones).

The product of its digits is 725760, while the sum is 43.

The cubic root of 766625344 is about 915.2246828967.

The spelling of 766625344 in words is "seven hundred sixty-six million, six hundred twenty-five thousand, three hundred forty-four".