91196507 has 4 divisors (see below), whose sum is σ = 93317400. Its totient is φ = 89075616.

The previous prime is 91196489. The next prime is 91196533. The reversal of 91196507 is 70569119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70569119 = 3209 ⋅21991.

It is a cyclic number.

It is not a de Polignac number, because 91196507 - 2⁸ = 91196251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91196557) 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, 1060382 + ... + 1060467.

It is an arithmetic number, because the mean of its divisors is an integer number (23329350).

Almost surely, 2^91196507 is an apocalyptic number.

91196507 is a deficient number, since it is larger than the sum of its proper divisors (2120893).

91196507 is a wasteful number, since it uses less digits than its factorization.

91196507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120892.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 91196507 is about 9549.6862252118. The cubic root of 91196507 is about 450.1176762206.

The spelling of 91196507 in words is "ninety-one million, one hundred ninety-six thousand, five hundred seven".