669982570 has 16 divisors (see below), whose sum is σ = 1234015200. Its totient is φ = 261760464.

The previous prime is 669982567. The next prime is 669982609. The reversal of 669982570 is 75289966.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778620 + ... + 779479.

It is an arithmetic number, because the mean of its divisors is an integer number (77125950).

Almost surely, 2^669982570 is an apocalyptic number.

669982570 is a deficient number, since it is larger than the sum of its proper divisors (564032630).

669982570 is a wasteful number, since it uses less digits than its factorization.

669982570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558149.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 669982570 is about 25884.0215190762. The cubic root of 669982570 is about 875.0264242360.

The spelling of 669982570 in words is "six hundred sixty-nine million, nine hundred eighty-two thousand, five hundred seventy".