112897691 has 4 divisors (see below), whose sum is σ = 116539584. Its totient is φ = 109255800.

The previous prime is 112897633. The next prime is 112897709. The reversal of 112897691 is 196798211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196798211 = 4153 ⋅47387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112897691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112897591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1820900 + ... + 1820961.

It is an arithmetic number, because the mean of its divisors is an integer number (29134896).

Almost surely, 2^112897691 is an apocalyptic number.

112897691 is a deficient number, since it is larger than the sum of its proper divisors (3641893).

112897691 is an equidigital number, since it uses as much as digits as its factorization.

112897691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641892.

The product of its digits is 54432, while the sum is 44.

The square root of 112897691 is about 10625.3325124440. The cubic root of 112897691 is about 483.3128624967.

The spelling of 112897691 in words is "one hundred twelve million, eight hundred ninety-seven thousand, six hundred ninety-one".