210684668 has 6 divisors (see below), whose sum is σ = 368698176. Its totient is φ = 105342332.

The previous prime is 210684653. The next prime is 210684671. The reversal of 210684668 is 866486012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26335580 + ... + 26335587.

It is an arithmetic number, because the mean of its divisors is an integer number (61449696).

Almost surely, 2^210684668 is an apocalyptic number.

It is an amenable number.

210684668 is a deficient number, since it is larger than the sum of its proper divisors (158013508).

210684668 is a wasteful number, since it uses less digits than its factorization.

210684668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52671171 (or 52671169 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 210684668 is about 14514.9808129394. The cubic root of 210684668 is about 595.0374648631.

The spelling of 210684668 in words is "two hundred ten million, six hundred eighty-four thousand, six hundred sixty-eight".