667271632 has 20 divisors (see below), whose sum is σ = 1311050016. Its totient is φ = 328936160.

The previous prime is 667271603. The next prime is 667271677. The reversal of 667271632 is 236172766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292558 + ... + 294829.

Almost surely, 2^667271632 is an apocalyptic number.

It is an amenable number.

667271632 is a deficient number, since it is larger than the sum of its proper divisors (643778384).

667271632 is a wasteful number, since it uses less digits than its factorization.

667271632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587466 (or 587460 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 667271632 is about 25831.6014215147. The cubic root of 667271632 is about 873.8446277962.

The spelling of 667271632 in words is "six hundred sixty-seven million, two hundred seventy-one thousand, six hundred thirty-two".