91243608 has 32 divisors (see below), whose sum is σ = 230247360. Its totient is φ = 30129440.

The previous prime is 91243597. The next prime is 91243609. The reversal of 91243608 is 80634219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91243609) 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, 15198 + ... + 20333.

It is an arithmetic number, because the mean of its divisors is an integer number (7195230).

Almost surely, 2^91243608 is an apocalyptic number.

It is an amenable number.

91243608 is an abundant number, since it is smaller than the sum of its proper divisors (139003752).

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

91243608 is a wasteful number, since it uses less digits than its factorization.

91243608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35647 (or 35643 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 91243608 is about 9552.1520088407. The cubic root of 91243608 is about 450.1951548597.

The spelling of 91243608 in words is "ninety-one million, two hundred forty-three thousand, six hundred eight".