113561689 has 4 divisors (see below), whose sum is σ = 119538640. Its totient is φ = 107584740.

The previous prime is 113561681. The next prime is 113561699. The reversal of 113561689 is 986165311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113561689 - 2³ = 113561681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113561681) 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, 2988447 + ... + 2988484.

It is an arithmetic number, because the mean of its divisors is an integer number (29884660).

Almost surely, 2^113561689 is an apocalyptic number.

113561689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

113561689 is a deficient number, since it is larger than the sum of its proper divisors (5976951).

113561689 is an equidigital number, since it uses as much as digits as its factorization.

113561689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976950.

The product of its digits is 38880, while the sum is 40.

The square root of 113561689 is about 10656.5326912650. The cubic root of 113561689 is about 484.2585318809.

The spelling of 113561689 in words is "one hundred thirteen million, five hundred sixty-one thousand, six hundred eighty-nine".