669024909 has 24 divisors (see below), whose sum is σ = 1115367552. Its totient is φ = 378511200.

The previous prime is 669024877. The next prime is 669024911. The reversal of 669024909 is 909420966.

It is not a de Polignac number, because 669024909 - 2⁵ = 669024877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669024929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46209 + ... + 58934.

It is an arithmetic number, because the mean of its divisors is an integer number (46473648).

Almost surely, 2^669024909 is an apocalyptic number.

It is an amenable number.

669024909 is a deficient number, since it is larger than the sum of its proper divisors (446342643).

669024909 is a wasteful number, since it uses less digits than its factorization.

669024909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105257 (or 105254 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 669024909 is about 25865.5158270621. The cubic root of 669024909 is about 874.6093097720.

The spelling of 669024909 in words is "six hundred sixty-nine million, twenty-four thousand, nine hundred nine".