91112607 has 22 divisors (see below), whose sum is σ = 136756712. Its totient is φ = 60702372.

The previous prime is 91112603. The next prime is 91112617. The reversal of 91112607 is 70621119.

It is not a de Polignac number, because 91112607 - 2² = 91112603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91112603) by changing a digit.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 58278 + ... + 59820.

Almost surely, 2^91112607 is an apocalyptic number.

91112607 is a deficient number, since it is larger than the sum of its proper divisors (45644105).

91112607 is an frugal number, since it uses more digits than its factorization.

91112607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1546 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 91112607 is about 9545.2923999215. The cubic root of 91112607 is about 449.9795990751.

It can be divided in two parts, 91112 and 607, that added together give a palindrome (91719).

The spelling of 91112607 in words is "ninety-one million, one hundred twelve thousand, six hundred seven".