91450065 has 16 divisors (see below), whose sum is σ = 167223168. Its totient is φ = 41805696.

The previous prime is 91450063. The next prime is 91450087. The reversal of 91450065 is 56005419.

It is not a de Polignac number, because 91450065 - 2¹ = 91450063 is a prime.

It is a super-2 number, since 2×91450065² = 16726228777008450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91450061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435372 + ... + 435581.

It is an arithmetic number, because the mean of its divisors is an integer number (10451448).

Almost surely, 2^91450065 is an apocalyptic number.

It is an amenable number.

91450065 is a deficient number, since it is larger than the sum of its proper divisors (75773103).

91450065 is a wasteful number, since it uses less digits than its factorization.

91450065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870968.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 91450065 is about 9562.9527343807. The cubic root of 91450065 is about 450.5344514166.

The spelling of 91450065 in words is "ninety-one million, four hundred fifty thousand, sixty-five".