667271500074 has 20 divisors (see below), whose sum is σ = 1495182435714. Its totient is φ = 222423833304.

The previous prime is 667271500009. The next prime is 667271500097. The reversal of 667271500074 is 470005172766.

667271500074 is a `hidden beast` number, since 6 + 6 + 7 + 2 + 71 + 500 + 0 + 74 = 666.

667271500074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 452314086849 + 214957413225 = 672543^2 + 463635^2 .

It is a super-2 number, since 2×667271500074² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2059479777 + ... + 2059480100.

Almost surely, 2^667271500074 is an apocalyptic number.

667271500074 is an abundant number, since it is smaller than the sum of its proper divisors (827910935640).

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

667271500074 is a wasteful number, since it uses less digits than its factorization.

667271500074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118959891 (or 4118959882 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 667271500074 in words is "six hundred sixty-seven billion, two hundred seventy-one million, five hundred thousand, seventy-four".