91163622 has 64 divisors (see below), whose sum is σ = 217479168. Its totient is φ = 25152000.

The previous prime is 91163621. The next prime is 91163627. The reversal of 91163622 is 22636119.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 91163622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91163621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33472 + ... + 36092.

It is an arithmetic number, because the mean of its divisors is an integer number (3398112).

Almost surely, 2^91163622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91163622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108739584).

91163622 is an abundant number, since it is smaller than the sum of its proper divisors (126315546).

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

91163622 is a wasteful number, since it uses less digits than its factorization.

91163622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685.

The product of its digits is 3888, while the sum is 30.

The square root of 91163622 is about 9547.9642856475. The cubic root of 91163622 is about 450.0635663289.

The spelling of 91163622 in words is "ninety-one million, one hundred sixty-three thousand, six hundred twenty-two".