613646732465 has 8 divisors (see below), whose sum is σ = 793020392808. Its totient is φ = 453154510080.

The previous prime is 613646732443. The next prime is 613646732471. The reversal of 613646732465 is 564237646316.

It can be written as a sum of positive squares in 4 ways, for example, as 19211900449 + 594434832016 = 138607^2 + 770996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 613646732465 - 2⁶ = 613646732401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4720359416 + ... + 4720359545.

It is an arithmetic number, because the mean of its divisors is an integer number (99127549101).

Almost surely, 2^613646732465 is an apocalyptic number.

613646732465 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613646732465 is a deficient number, since it is larger than the sum of its proper divisors (179373660343).

613646732465 is a wasteful number, since it uses less digits than its factorization.

613646732465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440718979.

The product of its digits is 13063680, while the sum is 53.

The spelling of 613646732465 in words is "six hundred thirteen billion, six hundred forty-six million, seven hundred thirty-two thousand, four hundred sixty-five".