667112972 has 18 divisors (see below), whose sum is σ = 1182456828. Its totient is φ = 329321928.

The previous prime is 667112921. The next prime is 667112981. The reversal of 667112972 is 279211766.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11603 + ... + 38325.

It is an arithmetic number, because the mean of its divisors is an integer number (65692046).

Almost surely, 2^667112972 is an apocalyptic number.

It is an amenable number.

667112972 is a deficient number, since it is larger than the sum of its proper divisors (515343856).

667112972 is a wasteful number, since it uses less digits than its factorization.

667112972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26885 (or 26804 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 667112972 is about 25828.5301943413. The cubic root of 667112972 is about 873.7753630609.

The spelling of 667112972 in words is "six hundred sixty-seven million, one hundred twelve thousand, nine hundred seventy-two".