613865568 has 24 divisors (see below), whose sum is σ = 1611397368. Its totient is φ = 204621824.

The previous prime is 613865531. The next prime is 613865579. The reversal of 613865568 is 865568316.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197121 + ... + 3197312.

It is an arithmetic number, because the mean of its divisors is an integer number (67141557).

Almost surely, 2^613865568 is an apocalyptic number.

It is an amenable number.

613865568 is an abundant number, since it is smaller than the sum of its proper divisors (997531800).

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

613865568 is a wasteful number, since it uses less digits than its factorization.

613865568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394446 (or 6394438 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 613865568 is about 24776.3106212366. The cubic root of 613865568 is about 849.8802913309.

The spelling of 613865568 in words is "six hundred thirteen million, eight hundred sixty-five thousand, five hundred sixty-eight".