669294705 has 8 divisors (see below), whose sum is σ = 1070871552. Its totient is φ = 356957168.

The previous prime is 669294677. The next prime is 669294727. The reversal of 669294705 is 507492966.

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

It is a cyclic number.

It is not a de Polignac number, because 669294705 - 2⁵ = 669294673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22309809 + ... + 22309838.

It is an arithmetic number, because the mean of its divisors is an integer number (133858944).

Almost surely, 2^669294705 is an apocalyptic number.

It is an amenable number.

669294705 is a deficient number, since it is larger than the sum of its proper divisors (401576847).

669294705 is a wasteful number, since it uses less digits than its factorization.

669294705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44619655.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 669294705 is about 25870.7306622755. The cubic root of 669294705 is about 874.7268611408.

The spelling of 669294705 in words is "six hundred sixty-nine million, two hundred ninety-four thousand, seven hundred five".