669013299 has 6 divisors (see below), whose sum is σ = 966352556. Its totient is φ = 446008860.

The previous prime is 669013297. The next prime is 669013309. The reversal of 669013299 is 992310966.

It is a happy number.

669013299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 669013299 - 2¹ = 669013297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669013297) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37167397 + ... + 37167414.

Almost surely, 2^669013299 is an apocalyptic number.

669013299 is a deficient number, since it is larger than the sum of its proper divisors (297339257).

669013299 is a wasteful number, since it uses less digits than its factorization.

669013299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74334817 (or 74334814 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 669013299 is about 25865.2913960002. The cubic root of 669013299 is about 874.6042505320.

The spelling of 669013299 in words is "six hundred sixty-nine million, thirteen thousand, two hundred ninety-nine".