764724625 has 24 divisors (see below), whose sum is σ = 1110201768. Its totient is φ = 524378400.

The previous prime is 764724601. The next prime is 764724643. The reversal of 764724625 is 526427467.

It can be written as a sum of positive squares in 4 ways, for example, as 10233601 + 754491024 = 3199^2 + 27468^2 .

It is not a de Polignac number, because 764724625 - 2²¹ = 762627473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56302 + ... + 68551.

It is an arithmetic number, because the mean of its divisors is an integer number (46258407).

Almost surely, 2^764724625 is an apocalyptic number.

It is an amenable number.

764724625 is a deficient number, since it is larger than the sum of its proper divisors (345477143).

764724625 is a wasteful number, since it uses less digits than its factorization.

764724625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124882 (or 124865 counting only the distinct ones).

The product of its digits is 564480, while the sum is 43.

The square root of 764724625 is about 27653.6548217410. The cubic root of 764724625 is about 914.4676748784.

The spelling of 764724625 in words is "seven hundred sixty-four million, seven hundred twenty-four thousand, six hundred twenty-five".