668517014 has 48 divisors (see below), whose sum is σ = 1166356800. Its totient is φ = 286363440.

The previous prime is 668516977. The next prime is 668517041. The reversal of 668517014 is 410715866.

668517014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1595297 + ... + 1595715.

It is an arithmetic number, because the mean of its divisors is an integer number (24299100).

Almost surely, 2^668517014 is an apocalyptic number.

668517014 is a deficient number, since it is larger than the sum of its proper divisors (497839786).

668517014 is a wasteful number, since it uses less digits than its factorization.

668517014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 668517014 is about 25855.6959682001. The cubic root of 668517014 is about 874.3879317909.

The spelling of 668517014 in words is "six hundred sixty-eight million, five hundred seventeen thousand, fourteen".