667674476766 has 48 divisors (see below), whose sum is σ = 1601694027648. Its totient is φ = 199305810000.

The previous prime is 667674476741. The next prime is 667674476831.

667674476766 is a `hidden beast` number, since 6 + 6 + 7 + 67 + 447 + 67 + 66 = 666.

667674476766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 667674476694 and 667674476703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25151610 + ... + 25178141.

It is an arithmetic number, because the mean of its divisors is an integer number (33368625576).

Almost surely, 2^667674476766 is an apocalyptic number.

667674476766 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

667674476766 is an abundant number, since it is smaller than the sum of its proper divisors (934019550882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667674476766 is a wasteful number, since it uses less digits than its factorization.

667674476766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50329837 (or 50329834 counting only the distinct ones).

The product of its digits is 1792336896, while the sum is 72.

The spelling of 667674476766 in words is "six hundred sixty-seven billion, six hundred seventy-four million, four hundred seventy-six thousand, seven hundred sixty-six".