669510936 has 48 divisors (see below), whose sum is σ = 1875790800. Its totient is φ = 215474112.

The previous prime is 669510931. The next prime is 669510943. The reversal of 669510936 is 639015966.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 669510891 and 669510900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669510931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158236 + ... + 162411.

It is an arithmetic number, because the mean of its divisors is an integer number (39078975).

Almost surely, 2^669510936 is an apocalyptic number.

It is an amenable number.

669510936 is an abundant number, since it is smaller than the sum of its proper divisors (1206279864).

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

669510936 is a wasteful number, since it uses less digits than its factorization.

669510936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320688 (or 320681 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 669510936 is about 25874.9093911457. The cubic root of 669510936 is about 874.8210511875.

The spelling of 669510936 in words is "six hundred sixty-nine million, five hundred ten thousand, nine hundred thirty-six".