667257475863 has 32 divisors (see below), whose sum is σ = 980550784512. Its totient is φ = 400238697600.

The previous prime is 667257475813. The next prime is 667257475873. The reversal of 667257475863 is 368574752766.

It is not a de Polignac number, because 667257475863 - 2¹⁰ = 667257474839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667257475794 and 667257475803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667257475813) 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, 5861281 + ... + 5974037.

It is an arithmetic number, because the mean of its divisors is an integer number (30642212016).

Almost surely, 2^667257475863 is an apocalyptic number.

667257475863 is a deficient number, since it is larger than the sum of its proper divisors (313293308649).

667257475863 is a wasteful number, since it uses less digits than its factorization.

667257475863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114615.

The product of its digits is 355622400, while the sum is 66.

The spelling of 667257475863 in words is "six hundred sixty-seven billion, two hundred fifty-seven million, four hundred seventy-five thousand, eight hundred sixty-three".