669110500601 has 4 divisors (see below), whose sum is σ = 670135172772. Its totient is φ = 668085828432.

The previous prime is 669110500579. The next prime is 669110500687. The reversal of 669110500601 is 106005011966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113399889001 + 555710611600 = 336749^2 + 745460^2 .

It is a cyclic number.

It is not a de Polignac number, because 669110500601 - 2¹⁸ = 669110238457 is a prime.

It is a super-2 number, since 2×669110500601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669110500801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512335106 + ... + 512336411.

It is an arithmetic number, because the mean of its divisors is an integer number (167533793193).

Almost surely, 2^669110500601 is an apocalyptic number.

It is an amenable number.

669110500601 is a deficient number, since it is larger than the sum of its proper divisors (1024672171).

669110500601 is a wasteful number, since it uses less digits than its factorization.

669110500601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024672170.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 669110500601 in words is "six hundred sixty-nine billion, one hundred ten million, five hundred thousand, six hundred one".