91613359 has 4 divisors (see below), whose sum is σ = 92903760. Its totient is φ = 90322960.

The previous prime is 91613351. The next prime is 91613411. The reversal of 91613359 is 95331619.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91613359 - 2³ = 91613351 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 (91613351) 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, 645094 + ... + 645235.

It is an arithmetic number, because the mean of its divisors is an integer number (23225940).

Almost surely, 2^91613359 is an apocalyptic number.

91613359 is a deficient number, since it is larger than the sum of its proper divisors (1290401).

91613359 is a wasteful number, since it uses less digits than its factorization.

91613359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290400.

The product of its digits is 21870, while the sum is 37.

The square root of 91613359 is about 9571.4867706120. The cubic root of 91613359 is about 450.8024513256.

The spelling of 91613359 in words is "ninety-one million, six hundred thirteen thousand, three hundred fifty-nine".