669535706 has 48 divisors (see below), whose sum is σ = 1222882560. Its totient is φ = 273792960.

The previous prime is 669535693. The next prime is 669535729. The reversal of 669535706 is 607535966.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220265 + ... + 223283.

It is an arithmetic number, because the mean of its divisors is an integer number (25476720).

Almost surely, 2^669535706 is an apocalyptic number.

669535706 is a deficient number, since it is larger than the sum of its proper divisors (553346854).

669535706 is a wasteful number, since it uses less digits than its factorization.

669535706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3132 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 47.

The square root of 669535706 is about 25875.3880357377. The cubic root of 669535706 is about 874.8318396845.

The spelling of 669535706 in words is "six hundred sixty-nine million, five hundred thirty-five thousand, seven hundred six".