91448653 has 16 divisors (see below), whose sum is σ = 98542080. Its totient is φ = 84610224.

The previous prime is 91448647. The next prime is 91448663. The reversal of 91448653 is 35684419.

It is a cyclic number.

It is not a de Polignac number, because 91448653 - 2⁹ = 91448141 is a prime.

It is a super-2 number, since 2×91448653² = 16725712271028818, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (103680) is a multiple of the sum of its prime divisors (768).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91448663) 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, 162150 + ... + 162712.

It is an arithmetic number, because the mean of its divisors is an integer number (6158880).

Almost surely, 2^91448653 is an apocalyptic number.

It is an amenable number.

91448653 is a deficient number, since it is larger than the sum of its proper divisors (7093427).

91448653 is a wasteful number, since it uses less digits than its factorization.

91448653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its digits is 103680, while the sum is 40.

The square root of 91448653 is about 9562.8789075257. The cubic root of 91448653 is about 450.5321326360.

The spelling of 91448653 in words is "ninety-one million, four hundred forty-eight thousand, six hundred fifty-three".