659926013 has 4 divisors (see below), whose sum is σ = 673967040. Its totient is φ = 645884988.

The previous prime is 659925997. The next prime is 659926039. The reversal of 659926013 is 310629956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 659926013 - 2⁴ = 659925997 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 (659926093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7020443 + ... + 7020536.

It is an arithmetic number, because the mean of its divisors is an integer number (168491760).

Almost surely, 2^659926013 is an apocalyptic number.

It is an amenable number.

659926013 is a deficient number, since it is larger than the sum of its proper divisors (14041027).

659926013 is a wasteful number, since it uses less digits than its factorization.

659926013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14041026.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 659926013 is about 25689.0251469377. The cubic root of 659926013 is about 870.6262338458.

The spelling of 659926013 in words is "six hundred fifty-nine million, nine hundred twenty-six thousand, thirteen".