659940797 has 8 divisors (see below), whose sum is σ = 682359552. Its totient is φ = 637823200.

The previous prime is 659940779. The next prime is 659940829. The reversal of 659940797 is 797049956.

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 659940797 - 2¹⁰ = 659939773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659940397) 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, 70829 + ... + 79602.

It is an arithmetic number, because the mean of its divisors is an integer number (85294944).

Almost surely, 2^659940797 is an apocalyptic number.

It is an amenable number.

659940797 is a deficient number, since it is larger than the sum of its proper divisors (22418755).

659940797 is a wasteful number, since it uses less digits than its factorization.

659940797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150579.

The product of its (nonzero) digits is 4286520, while the sum is 56.

The square root of 659940797 is about 25689.3128946650. The cubic root of 659940797 is about 870.6327352020.

The spelling of 659940797 in words is "six hundred fifty-nine million, nine hundred forty thousand, seven hundred ninety-seven".