617617117 has 4 divisors (see below), whose sum is σ = 665126140. Its totient is φ = 570108096.

The previous prime is 617617111. The next prime is 617617141. The reversal of 617617117 is 711716716.

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 36132121 + 581484996 = 6011^2 + 24114^2 .

It is a cyclic number.

It is not a de Polignac number, because 617617117 - 2²³ = 609228509 is a prime.

It is a super-2 number, since 2×617617117² = 762901806422783378, 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 (617617111) 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, 23754492 + ... + 23754517.

It is an arithmetic number, because the mean of its divisors is an integer number (166281535).

Almost surely, 2^617617117 is an apocalyptic number.

It is an amenable number.

617617117 is a deficient number, since it is larger than the sum of its proper divisors (47509023).

617617117 is a wasteful number, since it uses less digits than its factorization.

617617117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47509022.

The product of its digits is 12348, while the sum is 37.

The square root of 617617117 is about 24851.9036896573. The cubic root of 617617117 is about 851.6080824555.

The spelling of 617617117 in words is "six hundred seventeen million, six hundred seventeen thousand, one hundred seventeen".