91448646 has 8 divisors (see below), whose sum is σ = 182897304. Its totient is φ = 30482880.

The previous prime is 91448597. The next prime is 91448647. The reversal of 91448646 is 64684419.

It is a sphenic number, since it is the product of 3 distinct primes.

91448646 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91448598 and 91448607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91448647) 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, 7620715 + ... + 7620726.

It is an arithmetic number, because the mean of its divisors is an integer number (22862163).

Almost surely, 2^91448646 is an apocalyptic number.

91448646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91448646 is a wasteful number, since it uses less digits than its factorization.

91448646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15241446.

The product of its digits is 165888, while the sum is 42.

The square root of 91448646 is about 9562.8785415271. The cubic root of 91448646 is about 450.5321211406.

The spelling of 91448646 in words is "ninety-one million, four hundred forty-eight thousand, six hundred forty-six".