91027636 has 24 divisors (see below), whose sum is σ = 188334720. Its totient is φ = 37666272.

The previous prime is 91027633. The next prime is 91027661. The reversal of 91027636 is 63672019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91027633) 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, 55240 + ... + 56863.

It is an arithmetic number, because the mean of its divisors is an integer number (7847280).

Almost surely, 2^91027636 is an apocalyptic number.

It is an amenable number.

91027636 is an abundant number, since it is smaller than the sum of its proper divisors (97307084).

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

91027636 is a wasteful number, since it uses less digits than its factorization.

91027636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112143 (or 112141 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 91027636 is about 9540.8404241974. The cubic root of 91027636 is about 449.8396729262.

The spelling of 91027636 in words is "ninety-one million, twenty-seven thousand, six hundred thirty-six".