659938851 has 48 divisors (see below), whose sum is σ = 1126480992. Its totient is φ = 367027200.

The previous prime is 659938801. The next prime is 659938883. The reversal of 659938851 is 158839956.

It is a happy number.

It is not a de Polignac number, because 659938851 - 2⁹ = 659938339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (659938801) 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 47 ways as a sum of consecutive naturals, for example, 231531 + ... + 234363.

It is an arithmetic number, because the mean of its divisors is an integer number (23468354).

Almost surely, 2^659938851 is an apocalyptic number.

659938851 is a deficient number, since it is larger than the sum of its proper divisors (466542141).

659938851 is a wasteful number, since it uses less digits than its factorization.

659938851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3041 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 659938851 is about 25689.2750189646. The cubic root of 659938851 is about 870.6318794419.

The spelling of 659938851 in words is "six hundred fifty-nine million, nine hundred thirty-eight thousand, eight hundred fifty-one".