669492732 has 24 divisors (see below), whose sum is σ = 1563364096. Its totient is φ = 222990768.

The previous prime is 669492697. The next prime is 669492779. The reversal of 669492732 is 237294966.

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, 5098 + ... + 36945.

Almost surely, 2^669492732 is an apocalyptic number.

It is an amenable number.

669492732 is an abundant number, since it is smaller than the sum of its proper divisors (893871364).

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

669492732 is a wasteful number, since it uses less digits than its factorization.

669492732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43377 (or 43375 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 669492732 is about 25874.5576194068. The cubic root of 669492732 is about 874.8131223218.

The spelling of 669492732 in words is "six hundred sixty-nine million, four hundred ninety-two thousand, seven hundred thirty-two".