668751710 has 32 divisors (see below), whose sum is σ = 1316546784. Its totient is φ = 242560000.

The previous prime is 668751709. The next prime is 668751719. The reversal of 668751710 is 17157866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668751719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36530 + ... + 51690.

It is an arithmetic number, because the mean of its divisors is an integer number (41142087).

Almost surely, 2^668751710 is an apocalyptic number.

668751710 is a deficient number, since it is larger than the sum of its proper divisors (647795074).

668751710 is a wasteful number, since it uses less digits than its factorization.

668751710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15580.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 668751710 is about 25860.2341443383. The cubic root of 668751710 is about 874.4902434925.

The spelling of 668751710 in words is "six hundred sixty-eight million, seven hundred fifty-one thousand, seven hundred ten".