669172325677 has 8 divisors (see below), whose sum is σ = 709409074752. Its totient is φ = 629032651200.

The previous prime is 669172325611. The next prime is 669172325681. The reversal of 669172325677 is 776523271966.

It is a happy number.

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 669172325677 - 2²⁷ = 669038107949 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 (669172325777) 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, 24254449 + ... + 24282022.

It is an arithmetic number, because the mean of its divisors is an integer number (88676134344).

Almost surely, 2^669172325677 is an apocalyptic number.

It is an amenable number.

669172325677 is a deficient number, since it is larger than the sum of its proper divisors (40236749075).

669172325677 is a wasteful number, since it uses less digits than its factorization.

669172325677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48537299.

The product of its digits is 40007520, while the sum is 61.

The spelling of 669172325677 in words is "six hundred sixty-nine billion, one hundred seventy-two million, three hundred twenty-five thousand, six hundred seventy-seven".