206530757107684 has 27 divisors (see below), whose sum is σ = 364977142461603. Its totient is φ = 102261336202872.

The previous prime is 206530757107621. The next prime is 206530757107721. The reversal of 206530757107684 is 486701757035602.

The square root of 206530757107684 is 14371178.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2960427787 + ... + 2960497549.

Almost surely, 2^{206530757107684} is an apocalyptic number.

206530757107684 is the 14371178-th square number.

It is an amenable number.

206530757107684 is a deficient number, since it is larger than the sum of its proper divisors (158446385353919).

206530757107684 is an frugal number, since it uses more digits than its factorization.

206530757107684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139736 (or 69868 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 61.

The spelling of 206530757107684 in words is "two hundred six trillion, five hundred thirty billion, seven hundred fifty-seven million, one hundred seven thousand, six hundred eighty-four".