660494683919 has 8 divisors (see below), whose sum is σ = 794580071040. Its totient is φ = 536341547736.

The previous prime is 660494683903. The next prime is 660494683931. The reversal of 660494683919 is 919386494066.

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 660494683919 - 2⁴ = 660494683903 is a prime.

It is a super-2 number, since 2×660494683919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660494683019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2483062589 + ... + 2483062854.

It is an arithmetic number, because the mean of its divisors is an integer number (99322508880).

Almost surely, 2^660494683919 is an apocalyptic number.

660494683919 is a deficient number, since it is larger than the sum of its proper divisors (134085387121).

660494683919 is a wasteful number, since it uses less digits than its factorization.

660494683919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966125469.

The product of its (nonzero) digits is 60466176, while the sum is 65.

The spelling of 660494683919 in words is "six hundred sixty billion, four hundred ninety-four million, six hundred eighty-three thousand, nine hundred nineteen".