206682640604 has 24 divisors (see below), whose sum is σ = 415343107200. Its totient is φ = 89002093680.

The previous prime is 206682640589. The next prime is 206682640639. The reversal of 206682640604 is 406046286602.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123613184 + ... + 123614855.

It is an arithmetic number, because the mean of its divisors is an integer number (17305962800).

Almost surely, 2^206682640604 is an apocalyptic number.

It is an amenable number.

206682640604 is an abundant number, since it is smaller than the sum of its proper divisors (208660466596).

206682640604 is a wasteful number, since it uses less digits than its factorization.

206682640604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247228073 (or 247228071 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 206682640604 in words is "two hundred six billion, six hundred eighty-two million, six hundred forty thousand, six hundred four".