671864132 has 12 divisors (see below), whose sum is σ = 1226882496. Its totient is φ = 321326280.

The previous prime is 671864129. The next prime is 671864143. The reversal of 671864132 is 231468176.

It is a super-2 number, since 2×671864132² = 902802823736226848, which contains 22 as substring.

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, 3651344 + ... + 3651527.

It is an arithmetic number, because the mean of its divisors is an integer number (102240208).

Almost surely, 2^671864132 is an apocalyptic number.

It is an amenable number.

671864132 is a deficient number, since it is larger than the sum of its proper divisors (555018364).

671864132 is a wasteful number, since it uses less digits than its factorization.

671864132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302898 (or 7302896 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 671864132 is about 25920.3420502122. The cubic root of 671864132 is about 875.8447925993.

The spelling of 671864132 in words is "six hundred seventy-one million, eight hundred sixty-four thousand, one hundred thirty-two".