659801399 has 8 divisors (see below), whose sum is σ = 711795600. Its totient is φ = 609271936.

The previous prime is 659801393. The next prime is 659801419. The reversal of 659801399 is 993108956.

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 659801399 - 2⁸ = 659801143 is a prime.

It is a super-2 number, since 2×659801399² = 870675772244714402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659801393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365249 + ... + 367050.

It is an arithmetic number, because the mean of its divisors is an integer number (88974450).

Almost surely, 2^659801399 is an apocalyptic number.

659801399 is a deficient number, since it is larger than the sum of its proper divisors (51994201).

659801399 is a wasteful number, since it uses less digits than its factorization.

659801399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732369.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 659801399 is about 25686.5995997913. The cubic root of 659801399 is about 870.5714302037.

The spelling of 659801399 in words is "six hundred fifty-nine million, eight hundred one thousand, three hundred ninety-nine".