669743708798 has 4 divisors (see below), whose sum is σ = 1004615563200. Its totient is φ = 334871854398.

The previous prime is 669743708771. The next prime is 669743708831. The reversal of 669743708798 is 897807347966.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167435927198 + ... + 167435927201.

It is an arithmetic number, because the mean of its divisors is an integer number (251153890800).

Almost surely, 2^669743708798 is an apocalyptic number.

669743708798 is a deficient number, since it is larger than the sum of its proper divisors (334871854402).

669743708798 is a wasteful number, since it uses less digits than its factorization.

669743708798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334871854401.

The product of its (nonzero) digits is 768144384, while the sum is 74.

The spelling of 669743708798 in words is "six hundred sixty-nine billion, seven hundred forty-three million, seven hundred eight thousand, seven hundred ninety-eight".