206707872 has 72 divisors (see below), whose sum is σ = 631211616. Its totient is φ = 59058048.

The previous prime is 206707861. The next prime is 206707883. The reversal of 206707872 is 278707602.

It is an interprime number because it is at equal distance from previous prime (206707861) and next prime (206707883).

It is a self number, because there is not a number n which added to its sum of digits gives 206707872.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17268 + ... + 26675.

It is an arithmetic number, because the mean of its divisors is an integer number (8766828).

Almost surely, 2^206707872 is an apocalyptic number.

It is an amenable number.

206707872 is an abundant number, since it is smaller than the sum of its proper divisors (424503744).

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

206707872 is a wasteful number, since it uses less digits than its factorization.

206707872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43970 (or 43955 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 206707872 is about 14377.3388358208. The cubic root of 206707872 is about 591.2697655594.

The spelling of 206707872 in words is "two hundred six million, seven hundred seven thousand, eight hundred seventy-two".