669683065 has 16 divisors (see below), whose sum is σ = 845180928. Its totient is φ = 508406976.

The previous prime is 669683039. The next prime is 669683083. The reversal of 669683065 is 560386966.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669683065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8322 + ... + 37531.

It is an arithmetic number, because the mean of its divisors is an integer number (52823808).

Almost surely, 2^669683065 is an apocalyptic number.

It is an amenable number.

669683065 is a deficient number, since it is larger than the sum of its proper divisors (175497863).

669683065 is a wasteful number, since it uses less digits than its factorization.

669683065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46008.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 669683065 is about 25878.2353532848. The cubic root of 669683065 is about 874.8960159425.

The spelling of 669683065 in words is "six hundred sixty-nine million, six hundred eighty-three thousand, sixty-five".