668080887 has 8 divisors (see below), whose sum is σ = 895390704. Its totient is φ = 443079168.

The previous prime is 668080883. The next prime is 668080891. The reversal of 668080887 is 788080866.

It is an interprime number because it is at equal distance from previous prime (668080883) and next prime (668080891).

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

It is not a de Polignac number, because 668080887 - 2² = 668080883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668080883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576348 + ... + 577505.

It is an arithmetic number, because the mean of its divisors is an integer number (111923838).

Almost surely, 2^668080887 is an apocalyptic number.

668080887 is a deficient number, since it is larger than the sum of its proper divisors (227309817).

668080887 is a wasteful number, since it uses less digits than its factorization.

668080887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154049.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 668080887 is about 25847.2607252684. The cubic root of 668080887 is about 874.1977460839.

The spelling of 668080887 in words is "six hundred sixty-eight million, eighty thousand, eight hundred eighty-seven".