669311353639 has 8 divisors (see below), whose sum is σ = 673515914400. Its totient is φ = 665109134976.

The previous prime is 669311353603. The next prime is 669311353657. The reversal of 669311353639 is 936353113966.

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 669311353639 - 2¹⁵ = 669311320871 is a prime.

It is a super-2 number, since 2×669311353639² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669311353639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669311353939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10414 + ... + 1157035.

It is an arithmetic number, because the mean of its divisors is an integer number (84189489300).

Almost surely, 2^669311353639 is an apocalyptic number.

669311353639 is a deficient number, since it is larger than the sum of its proper divisors (4204560761).

669311353639 is a wasteful number, since it uses less digits than its factorization.

669311353639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171049.

The product of its digits is 7085880, while the sum is 55.

The spelling of 669311353639 in words is "six hundred sixty-nine billion, three hundred eleven million, three hundred fifty-three thousand, six hundred thirty-nine".