669654683 has 4 divisors (see below), whose sum is σ = 698770128. Its totient is φ = 640539240.

The previous prime is 669654673. The next prime is 669654691. The reversal of 669654683 is 386456966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 669654683 - 2⁶ = 669654619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669654673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14557688 + ... + 14557733.

It is an arithmetic number, because the mean of its divisors is an integer number (174692532).

Almost surely, 2^669654683 is an apocalyptic number.

669654683 is a deficient number, since it is larger than the sum of its proper divisors (29115445).

669654683 is a wasteful number, since it uses less digits than its factorization.

669654683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29115444.

The product of its digits is 5598720, while the sum is 53.

The square root of 669654683 is about 25877.6869715978. The cubic root of 669654683 is about 874.8836560413.

The spelling of 669654683 in words is "six hundred sixty-nine million, six hundred fifty-four thousand, six hundred eighty-three".