669570536 has 8 divisors (see below), whose sum is σ = 1255444770. Its totient is φ = 334785264.

The previous prime is 669570523. The next prime is 669570547. The reversal of 669570536 is 635075966.

It can be written as a sum of positive squares in only one way, i.e., 515562436 + 154008100 = 22706^2 + 12410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41848151 + ... + 41848166.

Almost surely, 2^669570536 is an apocalyptic number.

It is an amenable number.

669570536 is a deficient number, since it is larger than the sum of its proper divisors (585874234).

669570536 is a wasteful number, since it uses less digits than its factorization.

669570536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83696323 (or 83696319 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 47.

The square root of 669570536 is about 25876.0610603701. The cubic root of 669570536 is about 874.8470093333.

The spelling of 669570536 in words is "six hundred sixty-nine million, five hundred seventy thousand, five hundred thirty-six".