659620659 has 4 divisors (see below), whose sum is σ = 879494216. Its totient is φ = 439747104.

The previous prime is 659620651. The next prime is 659620667. The reversal of 659620659 is 956026956.

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

It is an interprime number because it is at equal distance from previous prime (659620651) and next prime (659620667).

It is not a de Polignac number, because 659620659 - 2³ = 659620651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659620651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109936774 + ... + 109936779.

It is an arithmetic number, because the mean of its divisors is an integer number (219873554).

Almost surely, 2^659620659 is an apocalyptic number.

659620659 is a deficient number, since it is larger than the sum of its proper divisors (219873557).

659620659 is a wasteful number, since it uses less digits than its factorization.

659620659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219873556.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 659620659 is about 25683.0811819766. The cubic root of 659620659 is about 870.4919308018.

The spelling of 659620659 in words is "six hundred fifty-nine million, six hundred twenty thousand, six hundred fifty-nine".