91622566 has 16 divisors (see below), whose sum is σ = 158510880. Its totient is φ = 38905920.

The previous prime is 91622561. The next prime is 91622581. The reversal of 91622566 is 66522619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91622561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28495 + ... + 31546.

It is an arithmetic number, because the mean of its divisors is an integer number (9906930).

Almost surely, 2^91622566 is an apocalyptic number.

91622566 is a deficient number, since it is larger than the sum of its proper divisors (66888314).

91622566 is a wasteful number, since it uses less digits than its factorization.

91622566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60159.

The product of its digits is 38880, while the sum is 37.

The square root of 91622566 is about 9571.9677182907. The cubic root of 91622566 is about 450.8175524680.

The spelling of 91622566 in words is "ninety-one million, six hundred twenty-two thousand, five hundred sixty-six".