669797455 has 16 divisors (see below), whose sum is σ = 823410720. Its totient is φ = 522764928.

The previous prime is 669797431. The next prime is 669797461. The reversal of 669797455 is 554797966.

It is a cyclic number.

It is not a de Polignac number, because 669797455 - 2⁷ = 669797327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669797455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294061 + ... + 296329.

It is an arithmetic number, because the mean of its divisors is an integer number (51463170).

Almost surely, 2^669797455 is an apocalyptic number.

669797455 is a deficient number, since it is larger than the sum of its proper divisors (153613265).

669797455 is a wasteful number, since it uses less digits than its factorization.

669797455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its digits is 14288400, while the sum is 58.

The square root of 669797455 is about 25880.4454173416. The cubic root of 669797455 is about 874.9458273945.

The spelling of 669797455 in words is "six hundred sixty-nine million, seven hundred ninety-seven thousand, four hundred fifty-five".