659924489 has 8 divisors (see below), whose sum is σ = 774583488. Its totient is φ = 550361520.

The previous prime is 659924471. The next prime is 659924501. The reversal of 659924489 is 984429956.

It is a happy number.

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 659924489 - 2²⁴ = 643147273 is a prime.

It is a super-2 number, since 2×659924489² = 871000662363822242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (659924429) 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, 1273727 + ... + 1274244.

It is an arithmetic number, because the mean of its divisors is an integer number (96822936).

Almost surely, 2^659924489 is an apocalyptic number.

It is an amenable number.

659924489 is a deficient number, since it is larger than the sum of its proper divisors (114658999).

659924489 is a wasteful number, since it uses less digits than its factorization.

659924489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548015.

The product of its digits is 5598720, while the sum is 56.

The square root of 659924489 is about 25688.9954844482. The cubic root of 659924489 is about 870.6255636518.

The spelling of 659924489 in words is "six hundred fifty-nine million, nine hundred twenty-four thousand, four hundred eighty-nine".