669623516 has 6 divisors (see below), whose sum is σ = 1171841160. Its totient is φ = 334811756.

The previous prime is 669623503. The next prime is 669623533. The reversal of 669623516 is 615326966.

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 as a sum of consecutive naturals, namely, 83702936 + ... + 83702943.

It is an arithmetic number, because the mean of its divisors is an integer number (195306860).

Almost surely, 2^669623516 is an apocalyptic number.

It is an amenable number.

669623516 is a deficient number, since it is larger than the sum of its proper divisors (502217644).

669623516 is a wasteful number, since it uses less digits than its factorization.

669623516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167405883 (or 167405881 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 669623516 is about 25877.0847662560. The cubic root of 669623516 is about 874.8700829154.

The spelling of 669623516 in words is "six hundred sixty-nine million, six hundred twenty-three thousand, five hundred sixteen".