668855702 has 8 divisors (see below), whose sum is σ = 1003397112. Its totient is φ = 334390000.

The previous prime is 668855657. The next prime is 668855729. The reversal of 668855702 is 207558866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16202 + ... + 40002.

It is an arithmetic number, because the mean of its divisors is an integer number (125424639).

Almost surely, 2^668855702 is an apocalyptic number.

668855702 is a deficient number, since it is larger than the sum of its proper divisors (334541410).

668855702 is a wasteful number, since it uses less digits than its factorization.

668855702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37854.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 668855702 is about 25862.2447208281. The cubic root of 668855702 is about 874.5355693709.

The spelling of 668855702 in words is "six hundred sixty-eight million, eight hundred fifty-five thousand, seven hundred two".