640276360 has 32 divisors (see below), whose sum is σ = 1444003200. Its totient is φ = 255509440.

The previous prime is 640276327. The next prime is 640276361. The reversal of 640276360 is 63672046.

It is not an unprimeable number, because it can be changed into a prime (640276361) 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, 1330 + ... + 35809.

It is an arithmetic number, because the mean of its divisors is an integer number (45125100).

Almost surely, 2^640276360 is an apocalyptic number.

It is an amenable number.

640276360 is an abundant number, since it is smaller than the sum of its proper divisors (803726840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640276360 is a wasteful number, since it uses less digits than its factorization.

640276360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37581 (or 37577 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 640276360 is about 25303.6827359181. The cubic root of 640276360 is about 861.8978997401.

The spelling of 640276360 in words is "six hundred forty million, two hundred seventy-six thousand, three hundred sixty".