669475497 has 8 divisors (see below), whose sum is σ = 892767456. Its totient is φ = 446250272.

The previous prime is 669475459. The next prime is 669475517. The reversal of 669475497 is 794574966.

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 669475497 - 2¹⁹ = 668951209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (669475897) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15718 + ... + 39824.

It is an arithmetic number, because the mean of its divisors is an integer number (111595932).

Almost surely, 2^669475497 is an apocalyptic number.

It is an amenable number.

669475497 is a deficient number, since it is larger than the sum of its proper divisors (223291959).

669475497 is a wasteful number, since it uses less digits than its factorization.

669475497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33367.

The product of its digits is 11430720, while the sum is 57.

The square root of 669475497 is about 25874.2245680909. The cubic root of 669475497 is about 874.8056153777.

The spelling of 669475497 in words is "six hundred sixty-nine million, four hundred seventy-five thousand, four hundred ninety-seven".