669605759198 has 8 divisors (see below), whose sum is σ = 1004412680040. Its totient is φ = 334801532520.

The previous prime is 669605759183. The next prime is 669605759213. The reversal of 669605759198 is 891957506966.

It is an interprime number because it is at equal distance from previous prime (669605759183) and next prime (669605759213).

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

It is a super-2 number, since 2×669605759198² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148433 + ... + 1166723.

It is an arithmetic number, because the mean of its divisors is an integer number (125551585005).

Almost surely, 2^669605759198 is an apocalyptic number.

669605759198 is a deficient number, since it is larger than the sum of its proper divisors (334806920842).

669605759198 is a wasteful number, since it uses less digits than its factorization.

669605759198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347082.

The product of its (nonzero) digits is 220449600, while the sum is 71.

The spelling of 669605759198 in words is "six hundred sixty-nine billion, six hundred five million, seven hundred fifty-nine thousand, one hundred ninety-eight".