669703333637 has 16 divisors (see below), whose sum is σ = 736435316400. Its totient is φ = 605268744192.

The previous prime is 669703333627. The next prime is 669703333643. The reversal of 669703333637 is 736333307966.

It can be written as a sum of positive squares in 8 ways, for example, as 37159887361 + 632543446276 = 192769^2 + 795326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669703333637 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 (669703333627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2445512 + ... + 2705537.

It is an arithmetic number, because the mean of its divisors is an integer number (46027207275).

Almost surely, 2^669703333637 is an apocalyptic number.

It is an amenable number.

669703333637 is a deficient number, since it is larger than the sum of its proper divisors (66731982763).

669703333637 is a wasteful number, since it uses less digits than its factorization.

669703333637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151272.

The product of its (nonzero) digits is 23147208, while the sum is 56.

The spelling of 669703333637 in words is "six hundred sixty-nine billion, seven hundred three million, three hundred thirty-three thousand, six hundred thirty-seven".