617338613 has 4 divisors (see below), whose sum is σ = 623002380. Its totient is φ = 611674848.

The previous prime is 617338609. The next prime is 617338643. The reversal of 617338613 is 316833716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181656484 + 435682129 = 13478^2 + 20873^2 .

It is a cyclic number.

It is not a de Polignac number, because 617338613 - 2² = 617338609 is a prime.

It is a super-2 number, since 2×617338613² = 762213926201527538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617338643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831720 + ... + 2831937.

It is an arithmetic number, because the mean of its divisors is an integer number (155750595).

Almost surely, 2^617338613 is an apocalyptic number.

It is an amenable number.

617338613 is a deficient number, since it is larger than the sum of its proper divisors (5663767).

617338613 is a wasteful number, since it uses less digits than its factorization.

617338613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663766.

The product of its digits is 54432, while the sum is 38.

The square root of 617338613 is about 24846.2997848774. The cubic root of 617338613 is about 851.4800571196.

The spelling of 617338613 in words is "six hundred seventeen million, three hundred thirty-eight thousand, six hundred thirteen".