642685116 has 48 divisors (see below), whose sum is σ = 1546140960. Its totient is φ = 207624960.

The previous prime is 642685073. The next prime is 642685133. The reversal of 642685116 is 611586246.

It is a happy number.

642685116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 116746 + ... + 122126.

It is an arithmetic number, because the mean of its divisors is an integer number (32211270).

Almost surely, 2^642685116 is an apocalyptic number.

It is an amenable number.

642685116 is an abundant number, since it is smaller than the sum of its proper divisors (903455844).

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

642685116 is a wasteful number, since it uses less digits than its factorization.

642685116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694 (or 5692 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 642685116 is about 25351.2349995025. The cubic root of 642685116 is about 862.9773834463.

The spelling of 642685116 in words is "six hundred forty-two million, six hundred eighty-five thousand, one hundred sixteen".