666656702 has 8 divisors (see below), whose sum is σ = 1043462736. Its totient is φ = 318835792.

The previous prime is 666656699. The next prime is 666656719. The reversal of 666656702 is 207656666.

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, 7246223 + ... + 7246314.

It is an arithmetic number, because the mean of its divisors is an integer number (130432842).

Almost surely, 2^666656702 is an apocalyptic number.

666656702 is a deficient number, since it is larger than the sum of its proper divisors (376806034).

666656702 is a wasteful number, since it uses less digits than its factorization.

666656702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492562.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 666656702 is about 25819.6960090548. The cubic root of 666656702 is about 873.5761122455.

The spelling of 666656702 in words is "six hundred sixty-six million, six hundred fifty-six thousand, seven hundred two".