669700637 has 8 divisors (see below), whose sum is σ = 700828800. Its totient is φ = 638740080.

The previous prime is 669700627. The next prime is 669700649. The reversal of 669700637 is 736007966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669700637 - 2¹² = 669696541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669700627) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33689 + ... + 49742.

It is an arithmetic number, because the mean of its divisors is an integer number (87603600).

Almost surely, 2^669700637 is an apocalyptic number.

It is an amenable number.

669700637 is a deficient number, since it is larger than the sum of its proper divisors (31128163).

669700637 is a wasteful number, since it uses less digits than its factorization.

669700637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83803.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 669700637 is about 25878.5748641613. The cubic root of 669700637 is about 874.9036680887.

The spelling of 669700637 in words is "six hundred sixty-nine million, seven hundred thousand, six hundred thirty-seven".