668556083 has 16 divisors (see below), whose sum is σ = 735534240. Its totient is φ = 603922176.

The previous prime is 668556079. The next prime is 668556103. The reversal of 668556083 is 380655866.

It is not a de Polignac number, because 668556083 - 2² = 668556079 is a prime.

It is a super-2 number, since 2×668556083² = 893934472232605778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668556283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134303 + ... + 139191.

It is an arithmetic number, because the mean of its divisors is an integer number (45970890).

Almost surely, 2^668556083 is an apocalyptic number.

668556083 is a deficient number, since it is larger than the sum of its proper divisors (66978157).

668556083 is a wasteful number, since it uses less digits than its factorization.

668556083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 668556083 is about 25856.4514773393. The cubic root of 668556083 is about 874.4049649134.

The spelling of 668556083 in words is "six hundred sixty-eight million, five hundred fifty-six thousand, eighty-three".