642536315 has 16 divisors (see below), whose sum is σ = 789888000. Its totient is φ = 501494112.

The previous prime is 642536299. The next prime is 642536329. The reversal of 642536315 is 513635246.

It is a cyclic number.

It is not a de Polignac number, because 642536315 - 2⁴ = 642536299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364406 + ... + 366164.

It is an arithmetic number, because the mean of its divisors is an integer number (49368000).

Almost surely, 2^642536315 is an apocalyptic number.

642536315 is a deficient number, since it is larger than the sum of its proper divisors (147351685).

642536315 is a wasteful number, since it uses less digits than its factorization.

642536315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506.

The product of its digits is 64800, while the sum is 35.

The square root of 642536315 is about 25348.3000416201. The cubic root of 642536315 is about 862.9107765361.

The spelling of 642536315 in words is "six hundred forty-two million, five hundred thirty-six thousand, three hundred fifteen".