668875107 has 32 divisors (see below), whose sum is σ = 968325120. Its totient is φ = 409294080.

The previous prime is 668875093. The next prime is 668875157. The reversal of 668875107 is 701578866.

It is not a de Polignac number, because 668875107 - 2¹⁰ = 668874083 is a prime.

It is a super-2 number, since 2×668875107² = 894787817528522898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668875157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365998 + ... + 367820.

It is an arithmetic number, because the mean of its divisors is an integer number (30260160).

Almost surely, 2^668875107 is an apocalyptic number.

668875107 is a deficient number, since it is larger than the sum of its proper divisors (299450013).

668875107 is a wasteful number, since it uses less digits than its factorization.

668875107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 668875107 is about 25862.6198788908. The cubic root of 668875107 is about 874.5440267001.

The spelling of 668875107 in words is "six hundred sixty-eight million, eight hundred seventy-five thousand, one hundred seven".