617968911 has 16 divisors (see below), whose sum is σ = 972044288. Its totient is φ = 341733600.

The previous prime is 617968909. The next prime is 617968943. The reversal of 617968911 is 119869716.

It is not a de Polignac number, because 617968911 - 2¹ = 617968909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617968951) 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, 473980 + ... + 475281.

It is an arithmetic number, because the mean of its divisors is an integer number (60752768).

Almost surely, 2^617968911 is an apocalyptic number.

617968911 is a deficient number, since it is larger than the sum of its proper divisors (354075377).

617968911 is a wasteful number, since it uses less digits than its factorization.

617968911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949302.

The product of its digits is 163296, while the sum is 48.

The square root of 617968911 is about 24858.9804899557. The cubic root of 617968911 is about 851.7697434270.

It can be divided in two parts, 61796 and 8911, that added together give a palindrome (70707).

The spelling of 617968911 in words is "six hundred seventeen million, nine hundred sixty-eight thousand, nine hundred eleven".