669275855 has 8 divisors (see below), whose sum is σ = 845401200. Its totient is φ = 507240576.

The previous prime is 669275819. The next prime is 669275861. The reversal of 669275855 is 558572966.

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 669275855 - 2⁶ = 669275791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669275797 and 669275806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522410 + ... + 3522599.

It is an arithmetic number, because the mean of its divisors is an integer number (105675150).

Almost surely, 2^669275855 is an apocalyptic number.

669275855 is a deficient number, since it is larger than the sum of its proper divisors (176125345).

669275855 is a wasteful number, since it uses less digits than its factorization.

669275855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045033.

The product of its digits is 4536000, while the sum is 53.

The square root of 669275855 is about 25870.3663483917. The cubic root of 669275855 is about 874.7186491349.

The spelling of 669275855 in words is "six hundred sixty-nine million, two hundred seventy-five thousand, eight hundred fifty-five".