642465315 has 24 divisors (see below), whose sum is σ = 1120451280. Its totient is φ = 340542144.

The previous prime is 642465269. The next prime is 642465349. The reversal of 642465315 is 513564246.

642465315 is a `hidden beast` number, since 642 + 4 + 6 + 5 + 3 + 1 + 5 = 666.

642465315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642465315 - 2⁶ = 642465251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642465315.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36460 + ... + 51129.

It is an arithmetic number, because the mean of its divisors is an integer number (46685470).

Almost surely, 2^642465315 is an apocalyptic number.

642465315 is a deficient number, since it is larger than the sum of its proper divisors (477985965).

642465315 is a wasteful number, since it uses less digits than its factorization.

642465315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87763 (or 87760 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 642465315 is about 25346.8995145363. The cubic root of 642465315 is about 862.8789916027.

The spelling of 642465315 in words is "six hundred forty-two million, four hundred sixty-five thousand, three hundred fifteen".