667407474732 has 24 divisors (see below), whose sum is σ = 1558120959472. Its totient is φ = 222349608000.

The previous prime is 667407474707. The next prime is 667407474733. The reversal of 667407474732 is 237474704766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (667407474733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14920519 + ... + 14965182.

Almost surely, 2^667407474732 is an apocalyptic number.

It is an amenable number.

667407474732 is an abundant number, since it is smaller than the sum of its proper divisors (890713484740).

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

667407474732 is a wasteful number, since it uses less digits than its factorization.

667407474732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29887569 (or 29887567 counting only the distinct ones).

The product of its (nonzero) digits is 33191424, while the sum is 57.

The spelling of 667407474732 in words is "six hundred sixty-seven billion, four hundred seven million, four hundred seventy-four thousand, seven hundred thirty-two".