669603670629 has 4 divisors (see below), whose sum is σ = 892804894176. Its totient is φ = 446402447084.

The previous prime is 669603670609. The next prime is 669603670639. The reversal of 669603670629 is 926076306966.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669603670629 - 2⁷ = 669603670501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669603670609) 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, 111600611769 + ... + 111600611774.

It is an arithmetic number, because the mean of its divisors is an integer number (223201223544).

Almost surely, 2^669603670629 is an apocalyptic number.

It is an amenable number.

669603670629 is a deficient number, since it is larger than the sum of its proper divisors (223201223547).

669603670629 is a wasteful number, since it uses less digits than its factorization.

669603670629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223201223546.

The product of its (nonzero) digits is 26453952, while the sum is 60.

The spelling of 669603670629 in words is "six hundred sixty-nine billion, six hundred three million, six hundred seventy thousand, six hundred twenty-nine".