611868117 has 16 divisors (see below), whose sum is σ = 932771840. Its totient is φ = 349488432.

The previous prime is 611868109. The next prime is 611868163. The reversal of 611868117 is 711868116.

It is not a de Polignac number, because 611868117 - 2³ = 611868109 is a prime.

It is a super-2 number, since 2×611868117² = 748765185202251378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611868107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59928 + ... + 69390.

It is an arithmetic number, because the mean of its divisors is an integer number (58298240).

Almost surely, 2^611868117 is an apocalyptic number.

It is an amenable number.

611868117 is a deficient number, since it is larger than the sum of its proper divisors (320903723).

611868117 is a wasteful number, since it uses less digits than its factorization.

611868117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552.

The product of its digits is 16128, while the sum is 39.

The square root of 611868117 is about 24735.9680829354. The cubic root of 611868117 is about 848.9574840564.

Subtracting 611868117 from its reverse (711868116), we obtain a palindrome (99999999).

The spelling of 611868117 in words is "six hundred eleven million, eight hundred sixty-eight thousand, one hundred seventeen".