91355673 has 4 divisors (see below), whose sum is σ = 121807568. Its totient is φ = 60903780.

The previous prime is 91355653. The next prime is 91355683. The reversal of 91355673 is 37655319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91355673 - 2¹² = 91351577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91355653) 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, 15225943 + ... + 15225948.

It is an arithmetic number, because the mean of its divisors is an integer number (30451892).

Almost surely, 2^91355673 is an apocalyptic number.

It is an amenable number.

91355673 is a deficient number, since it is larger than the sum of its proper divisors (30451895).

91355673 is a wasteful number, since it uses less digits than its factorization.

91355673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30451894.

The product of its digits is 85050, while the sum is 39.

The square root of 91355673 is about 9558.0161644559. The cubic root of 91355673 is about 450.3793886948.

The spelling of 91355673 in words is "ninety-one million, three hundred fifty-five thousand, six hundred seventy-three".