613938065764 has 27 divisors (see below), whose sum is σ = 1084296393817. Its totient is φ = 304164736064.

The previous prime is 613938065737. The next prime is 613938065893. The reversal of 613938065764 is 467560839316.

It is a happy number.

The square root of 613938065764 is 783542.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10818080100 + 603119985664 = 104010^2 + 776608^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613938065699 and 613938065708.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 177078759 + ... + 177082225.

Almost surely, 2^613938065764 is an apocalyptic number.

613938065764 is the 783542-nd square number.

It is an amenable number.

613938065764 is a deficient number, since it is larger than the sum of its proper divisors (470358328053).

613938065764 is an frugal number, since it uses more digits than its factorization.

613938065764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164 (or 3582 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 613938065764 in words is "six hundred thirteen billion, nine hundred thirty-eight million, sixty-five thousand, seven hundred sixty-four".