669535674 has 8 divisors (see below), whose sum is σ = 1339071360. Its totient is φ = 223178556.

The previous prime is 669535663. The next prime is 669535693. The reversal of 669535674 is 476535966.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

669535674 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 55794634 + ... + 55794645.

It is an arithmetic number, because the mean of its divisors is an integer number (167383920).

Almost surely, 2^669535674 is an apocalyptic number.

669535674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

669535674 is a wasteful number, since it uses less digits than its factorization.

669535674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111589284.

The product of its digits is 4082400, while the sum is 51.

The square root of 669535674 is about 25875.3874173895. The cubic root of 669535674 is about 874.8318257472.

It can be divided in two parts, 66953 and 5674, that added together give a palindrome (72627).

The spelling of 669535674 in words is "six hundred sixty-nine million, five hundred thirty-five thousand, six hundred seventy-four".