669535707 has 8 divisors (see below), whose sum is σ = 893045520. Its totient is φ = 446191520.

The previous prime is 669535693. The next prime is 669535729. The reversal of 669535707 is 707535966.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669535707 is a prime.

It is a super-3 number, since 3×669535707³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (669530707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31644 + ... + 48377.

It is an arithmetic number, because the mean of its divisors is an integer number (111630690).

Almost surely, 2^669535707 is an apocalyptic number.

669535707 is a deficient number, since it is larger than the sum of its proper divisors (223509813).

669535707 is a wasteful number, since it uses less digits than its factorization.

669535707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82813.

The product of its (nonzero) digits is 1190700, while the sum is 48.

The square root of 669535707 is about 25875.3880550611. The cubic root of 669535707 is about 874.8318401200.

The spelling of 669535707 in words is "six hundred sixty-nine million, five hundred thirty-five thousand, seven hundred seven".