667679375877 has 12 divisors (see below), whose sum is σ = 939559898880. Its totient is φ = 421692236712.

The previous prime is 667679375843. The next prime is 667679375887. The reversal of 667679375877 is 778573976766.

It is not a de Polignac number, because 667679375877 - 2¹⁰ = 667679374853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667679375887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308253477 + ... + 308255642.

It is an arithmetic number, because the mean of its divisors is an integer number (78296658240).

Almost surely, 2^667679375877 is an apocalyptic number.

It is an amenable number.

667679375877 is a deficient number, since it is larger than the sum of its proper divisors (271880523003).

667679375877 is a wasteful number, since it uses less digits than its factorization.

667679375877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616509160 (or 616509141 counting only the distinct ones).

The product of its digits is 3920736960, while the sum is 78.

The spelling of 667679375877 in words is "six hundred sixty-seven billion, six hundred seventy-nine million, three hundred seventy-five thousand, eight hundred seventy-seven".