669535960 has 16 divisors (see below), whose sum is σ = 1506456000. Its totient is φ = 267814368.

The previous prime is 669535943. The next prime is 669535991. The reversal of 669535960 is 69535966.

It is a happy number.

669535960 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8369160 + ... + 8369239.

It is an arithmetic number, because the mean of its divisors is an integer number (94153500).

Almost surely, 2^669535960 is an apocalyptic number.

It is an amenable number.

669535960 is an abundant number, since it is smaller than the sum of its proper divisors (836920040).

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

669535960 is a wasteful number, since it uses less digits than its factorization.

669535960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16738410 (or 16738406 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 49.

The square root of 669535960 is about 25875.3929438762. The cubic root of 669535960 is about 874.8319503120.

The spelling of 669535960 in words is "six hundred sixty-nine million, five hundred thirty-five thousand, nine hundred sixty".