669483873 has 10 divisors (see below), whose sum is σ = 1000093314. Its totient is φ = 446322528.

The previous prime is 669483833. The next prime is 669483887. The reversal of 669483873 is 378384966.

It can be written as a sum of positive squares in only one way, i.e., 347747904 + 321735969 = 18648^2 + 17937^2 .

It is not a de Polignac number, because 669483873 - 2²⁴ = 652706657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (669483833) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4132536 + ... + 4132697.

Almost surely, 2^669483873 is an apocalyptic number.

It is an amenable number.

669483873 is a deficient number, since it is larger than the sum of its proper divisors (330609441).

669483873 is an equidigital number, since it uses as much as digits as its factorization.

669483873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265245 (or 8265236 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 669483873 is about 25874.3864275078. The cubic root of 669483873 is about 874.8092636772.

The spelling of 669483873 in words is "six hundred sixty-nine million, four hundred eighty-three thousand, eight hundred seventy-three".