669832986 has 16 divisors (see below), whose sum is σ = 1343320704. Its totient is φ = 222668544.

The previous prime is 669832951. The next prime is 669833023. The reversal of 669832986 is 689238966.

It is a Curzon 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, 149895 + ... + 154298.

It is an arithmetic number, because the mean of its divisors is an integer number (83957544).

Almost surely, 2^669832986 is an apocalyptic number.

669832986 is an abundant number, since it is smaller than the sum of its proper divisors (673487718).

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

669832986 is a wasteful number, since it uses less digits than its factorization.

669832986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304565.

The product of its digits is 6718464, while the sum is 57.

The square root of 669832986 is about 25881.1318531474. The cubic root of 669832986 is about 874.9612983154.

The spelling of 669832986 in words is "six hundred sixty-nine million, eight hundred thirty-two thousand, nine hundred eighty-six".