11111598 has 12 divisors (see below), whose sum is σ = 24075168. Its totient is φ = 3703860.

The previous prime is 11111579. The next prime is 11111621. The reversal of 11111598 is 89511111.

11111598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11111598² = 246935220227208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308638 + ... + 308673.

It is an arithmetic number, because the mean of its divisors is an integer number (2006264).

Almost surely, 2^11111598 is an apocalyptic number.

11111598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11111598 is an abundant number, since it is smaller than the sum of its proper divisors (12963570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111598 is a wasteful number, since it uses less digits than its factorization.

11111598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617319 (or 617316 counting only the distinct ones).

The product of its digits is 360, while the sum is 27.

The square root of 11111598 is about 3333.4063658666. The cubic root of 11111598 is about 223.1475760411.

The spelling of 11111598 in words is "eleven million, one hundred eleven thousand, five hundred ninety-eight".