667020572 has 12 divisors (see below), whose sum is σ = 1167667200. Its totient is φ = 333401376.

The previous prime is 667020553. The next prime is 667020589. The reversal of 667020572 is 275020766.

It is a happy number.

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, 12572 + ... + 38627.

It is an arithmetic number, because the mean of its divisors is an integer number (97305600).

Almost surely, 2^667020572 is an apocalyptic number.

It is an amenable number.

667020572 is a deficient number, since it is larger than the sum of its proper divisors (500646628).

667020572 is a wasteful number, since it uses less digits than its factorization.

667020572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54460 (or 54458 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 667020572 is about 25826.7414127296. The cubic root of 667020572 is about 873.7350197834.

The spelling of 667020572 in words is "six hundred sixty-seven million, twenty thousand, five hundred seventy-two".