764725147 has 4 divisors (see below), whose sum is σ = 767427640. Its totient is φ = 762022656.

The previous prime is 764725133. The next prime is 764725211. The reversal of 764725147 is 741527467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-764725147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764765147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350822 + ... + 1351387.

It is an arithmetic number, because the mean of its divisors is an integer number (191856910).

Almost surely, 2^764725147 is an apocalyptic number.

764725147 is a deficient number, since it is larger than the sum of its proper divisors (2702493).

764725147 is a wasteful number, since it uses less digits than its factorization.

764725147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702492.

The product of its digits is 329280, while the sum is 43.

The square root of 764725147 is about 27653.6642599132. The cubic root of 764725147 is about 914.4678829498.

The spelling of 764725147 in words is "seven hundred sixty-four million, seven hundred twenty-five thousand, one hundred forty-seven".