669490307683 has 4 divisors (see below), whose sum is σ = 669650592040. Its totient is φ = 669330023328.

The previous prime is 669490307599. The next prime is 669490307693. The reversal of 669490307683 is 386703094966.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669490307683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669490307693) 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, 80135913 + ... + 80144266.

It is an arithmetic number, because the mean of its divisors is an integer number (167412648010).

Almost surely, 2^669490307683 is an apocalyptic number.

669490307683 is a deficient number, since it is larger than the sum of its proper divisors (160284357).

669490307683 is a wasteful number, since it uses less digits than its factorization.

669490307683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160284356.

The product of its (nonzero) digits is 35271936, while the sum is 61.

The spelling of 669490307683 in words is "six hundred sixty-nine billion, four hundred ninety million, three hundred seven thousand, six hundred eighty-three".