764421365 has 8 divisors (see below), whose sum is σ = 921348000. Its totient is φ = 608842192.

The previous prime is 764421341. The next prime is 764421367. The reversal of 764421365 is 563124467.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 764421365 - 2¹⁴ = 764404981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764421367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335615 + ... + 337884.

It is an arithmetic number, because the mean of its divisors is an integer number (115168500).

Almost surely, 2^764421365 is an apocalyptic number.

It is an amenable number.

764421365 is a deficient number, since it is larger than the sum of its proper divisors (156926635).

764421365 is a wasteful number, since it uses less digits than its factorization.

764421365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673731.

The product of its digits is 120960, while the sum is 38.

The square root of 764421365 is about 27648.1710968375. The cubic root of 764421365 is about 914.3467781423.

The spelling of 764421365 in words is "seven hundred sixty-four million, four hundred twenty-one thousand, three hundred sixty-five".