642707516 has 48 divisors (see below), whose sum is σ = 1261274112. Its totient is φ = 284059200.

The previous prime is 642707489. The next prime is 642707539. The reversal of 642707516 is 615707246.

642707516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×642707516² = 826145902245780512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 642707516.

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, 344426 + ... + 346286.

It is an arithmetic number, because the mean of its divisors is an integer number (26276544).

Almost surely, 2^642707516 is an apocalyptic number.

It is an amenable number.

642707516 is a deficient number, since it is larger than the sum of its proper divisors (618566596).

642707516 is a wasteful number, since it uses less digits than its factorization.

642707516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 642707516 is about 25351.6767887254. The cubic root of 642707516 is about 862.9874093352.

The spelling of 642707516 in words is "six hundred forty-two million, seven hundred seven thousand, five hundred sixteen".