91073345 has 32 divisors (see below), whose sum is σ = 122860800. Its totient is φ = 64247040.

The previous prime is 91073329. The next prime is 91073363. The reversal of 91073345 is 54337019.

It is a happy number.

It is not a de Polignac number, because 91073345 - 2⁴ = 91073329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457556 + ... + 457754.

It is an arithmetic number, because the mean of its divisors is an integer number (3839400).

Almost surely, 2^91073345 is an apocalyptic number.

It is an amenable number.

91073345 is a deficient number, since it is larger than the sum of its proper divisors (31787455).

91073345 is a wasteful number, since it uses less digits than its factorization.

91073345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 91073345 is about 9543.2355624285. The cubic root of 91073345 is about 449.9149551219.

It can be divided in two parts, 9107 and 3345, that multiplied together give a triangular number (30462915 = T₇₈₀₅).

The spelling of 91073345 in words is "ninety-one million, seventy-three thousand, three hundred forty-five".