669904837 has 8 divisors (see below), whose sum is σ = 765864000. Its totient is φ = 574010304.

The previous prime is 669904819. The next prime is 669904847. The reversal of 669904837 is 738409966.

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

It is not a de Polignac number, because 669904837 - 2⁷ = 669904709 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 (669904817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8589 + ... + 37597.

It is an arithmetic number, because the mean of its divisors is an integer number (95733000).

Almost surely, 2^669904837 is an apocalyptic number.

It is an amenable number.

669904837 is a deficient number, since it is larger than the sum of its proper divisors (95959163).

669904837 is a wasteful number, since it uses less digits than its factorization.

669904837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32315.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 669904837 is about 25882.5199120951. The cubic root of 669904837 is about 874.9925820324.

The spelling of 669904837 in words is "six hundred sixty-nine million, nine hundred four thousand, eight hundred thirty-seven".