91648367 has 4 divisors (see below), whose sum is σ = 91668096. Its totient is φ = 91628640.

The previous prime is 91648363. The next prime is 91648387. The reversal of 91648367 is 76384619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76384619 = 2203 ⋅34673.

It is a cyclic number.

It is not a de Polignac number, because 91648367 - 2² = 91648363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91648363) 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, 1367 + ... + 13607.

It is an arithmetic number, because the mean of its divisors is an integer number (22917024).

Almost surely, 2^91648367 is an apocalyptic number.

91648367 is a deficient number, since it is larger than the sum of its proper divisors (19729).

91648367 is a wasteful number, since it uses less digits than its factorization.

91648367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19728.

The product of its digits is 217728, while the sum is 44.

The square root of 91648367 is about 9573.3153609395. The cubic root of 91648367 is about 450.8598653775.

The spelling of 91648367 in words is "ninety-one million, six hundred forty-eight thousand, three hundred sixty-seven".