613664532 has 48 divisors (see below), whose sum is σ = 1713369280. Its totient is φ = 188819424.

The previous prime is 613664509. The next prime is 613664533. The reversal of 613664532 is 235466316.

613664532 is a `hidden beast` number, since 6 + 1 + 3 + 6 + 645 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613664533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217138 + ... + 219945.

Almost surely, 2^613664532 is an apocalyptic number.

It is an amenable number.

613664532 is an abundant number, since it is smaller than the sum of its proper divisors (1099704748).

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

613664532 is a wasteful number, since it uses less digits than its factorization.

613664532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437109 (or 437101 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 613664532 is about 24772.2532685261. The cubic root of 613664532 is about 849.7875048980.

The spelling of 613664532 in words is "six hundred thirteen million, six hundred sixty-four thousand, five hundred thirty-two".