659616534 has 40 divisors (see below), whose sum is σ = 1479942288. Its totient is φ = 219587760.

The previous prime is 659616533. The next prime is 659616553. The reversal of 659616534 is 435616956.

659616534 is a `hidden beast` number, since 6 + 59 + 61 + 6 + 534 = 666.

659616534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 659616534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659616533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 150279 + ... + 154605.

Almost surely, 2^659616534 is an apocalyptic number.

659616534 is an abundant number, since it is smaller than the sum of its proper divisors (820325754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659616534 is a wasteful number, since it uses less digits than its factorization.

659616534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282 (or 5273 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 659616534 is about 25683.0008760659. Note that the first 3 decimals coincide. The cubic root of 659616534 is about 870.4901162302.

Subtracting from 659616534 its sum of digits (45), we obtain a square (659616489 = 25683²).

The spelling of 659616534 in words is "six hundred fifty-nine million, six hundred sixteen thousand, five hundred thirty-four".