91222671 has 8 divisors (see below), whose sum is σ = 122811520. Its totient is φ = 60224472.

The previous prime is 91222639. The next prime is 91222679. The reversal of 91222671 is 17622219.

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

It is not a de Polignac number, because 91222671 - 2⁵ = 91222639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91222679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147301 + ... + 147918.

It is an arithmetic number, because the mean of its divisors is an integer number (15351440).

Almost surely, 2^91222671 is an apocalyptic number.

91222671 is a deficient number, since it is larger than the sum of its proper divisors (31588849).

91222671 is a wasteful number, since it uses less digits than its factorization.

91222671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295325.

The product of its digits is 3024, while the sum is 30.

The square root of 91222671 is about 9551.0560149127. The cubic root of 91222671 is about 450.1607179013.

The spelling of 91222671 in words is "ninety-one million, two hundred twenty-two thousand, six hundred seventy-one".