669660502 has 64 divisors (see below), whose sum is σ = 1233792000. Its totient is φ = 266428800.

The previous prime is 669660473. The next prime is 669660533. The reversal of 669660502 is 205066966.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 1918624 + ... + 1918972.

It is an arithmetic number, because the mean of its divisors is an integer number (19278000).

Almost surely, 2^669660502 is an apocalyptic number.

669660502 is a deficient number, since it is larger than the sum of its proper divisors (564131498).

669660502 is a wasteful number, since it uses less digits than its factorization.

669660502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 669660502 is about 25877.7994041224. The cubic root of 669660502 is about 874.8861901500.

The spelling of 669660502 in words is "six hundred sixty-nine million, six hundred sixty thousand, five hundred two".