669434166 has 16 divisors (see below), whose sum is σ = 1487631600. Its totient is φ = 223144704.

The previous prime is 669434153. The next prime is 669434179. The reversal of 669434166 is 661434966.

It is an interprime number because it is at equal distance from previous prime (669434153) and next prime (669434179).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6198411 + ... + 6198518.

It is an arithmetic number, because the mean of its divisors is an integer number (92976975).

Almost surely, 2^669434166 is an apocalyptic number.

669434166 is an abundant number, since it is smaller than the sum of its proper divisors (818197434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669434166 is a wasteful number, since it uses less digits than its factorization.

669434166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12396940 (or 12396934 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 669434166 is about 25873.4258651613. The cubic root of 669434166 is about 874.7876125605.

The spelling of 669434166 in words is "six hundred sixty-nine million, four hundred thirty-four thousand, one hundred sixty-six".