642635010 has 48 divisors (see below), whose sum is σ = 1673343360. Its totient is φ = 171113760.

The previous prime is 642634963. The next prime is 642635033. The reversal of 642635010 is 10536246.

642635010 is a `hidden beast` number, since 642 + 6 + 3 + 5 + 0 + 10 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59745 + ... + 69675.

It is an arithmetic number, because the mean of its divisors is an integer number (34861320).

Almost surely, 2^642635010 is an apocalyptic number.

642635010 is an abundant number, since it is smaller than the sum of its proper divisors (1030708350).

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

642635010 is a wasteful number, since it uses less digits than its factorization.

642635010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663 (or 10660 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 642635010 is about 25350.2467443613. The cubic root of 642635010 is about 862.9549559425.

The spelling of 642635010 in words is "six hundred forty-two million, six hundred thirty-five thousand, ten".