380764521 has 24 divisors (see below), whose sum is σ = 598093704. Its totient is φ = 232450560.

The previous prime is 380764513. The next prime is 380764543. The reversal of 380764521 is 125467083.

380764521 is a `hidden beast` number, since 3 + 8 + 0 + 7 + 645 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 230432400 + 150332121 = 15180^2 + 12261^2 .

It is not a de Polignac number, because 380764521 - 2³ = 380764513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380764621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27970 + ... + 39291.

It is an arithmetic number, because the mean of its divisors is an integer number (24920571).

Almost surely, 2^380764521 is an apocalyptic number.

It is an amenable number.

380764521 is a deficient number, since it is larger than the sum of its proper divisors (217329183).

380764521 is a wasteful number, since it uses less digits than its factorization.

380764521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67321 (or 67318 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 380764521 is about 19513.1883863196. The cubic root of 380764521 is about 724.8010685279.

The spelling of 380764521 in words is "three hundred eighty million, seven hundred sixty-four thousand, five hundred twenty-one".