669570682 has 12 divisors (see below), whose sum is σ = 1103961978. Its totient is φ = 304350200.

The previous prime is 669570679. The next prime is 669570701. The reversal of 669570682 is 286075966.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 663114001 + 6456681 = 25751^2 + 2541^2 .

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, 1383169 + ... + 1383652.

Almost surely, 2^669570682 is an apocalyptic number.

669570682 is a deficient number, since it is larger than the sum of its proper divisors (434391296).

669570682 is a wasteful number, since it uses less digits than its factorization.

669570682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766845 (or 2766834 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 669570682 is about 25876.0638815103. The cubic root of 669570682 is about 874.8470729202.

It can be divided in two parts, 6695 and 70682, that added together give a palindrome (77377).

The spelling of 669570682 in words is "six hundred sixty-nine million, five hundred seventy thousand, six hundred eighty-two".