664873190959 has 8 divisors (see below), whose sum is σ = 694589640192. Its totient is φ = 635673549720.

The previous prime is 664873190957. The next prime is 664873190977. The reversal of 664873190959 is 959091378466.

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

It is a cyclic number.

It is not a de Polignac number, because 664873190959 - 2¹ = 664873190957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664873190894 and 664873190903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664873190957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129199369 + ... + 129204514.

It is an arithmetic number, because the mean of its divisors is an integer number (86823705024).

Almost surely, 2^664873190959 is an apocalyptic number.

664873190959 is a deficient number, since it is larger than the sum of its proper divisors (29716449233).

664873190959 is a wasteful number, since it uses less digits than its factorization.

664873190959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258403997.

The product of its (nonzero) digits is 88179840, while the sum is 67.

The spelling of 664873190959 in words is "six hundred sixty-four billion, eight hundred seventy-three million, one hundred ninety thousand, nine hundred fifty-nine".