764928427 has 4 divisors (see below), whose sum is σ = 765772696. Its totient is φ = 764084160.

The previous prime is 764928377. The next prime is 764928443. The reversal of 764928427 is 724829467.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 764928427 - 2⁷ = 764928299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764928487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420774 + ... + 422587.

It is an arithmetic number, because the mean of its divisors is an integer number (191443174).

Almost surely, 2^764928427 is an apocalyptic number.

764928427 is a deficient number, since it is larger than the sum of its proper divisors (844269).

764928427 is an equidigital number, since it uses as much as digits as its factorization.

764928427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844268.

The product of its digits is 1354752, while the sum is 49.

The square root of 764928427 is about 27657.3394779758. The cubic root of 764928427 is about 914.5489040256.

The spelling of 764928427 in words is "seven hundred sixty-four million, nine hundred twenty-eight thousand, four hundred twenty-seven".