91650198 has 32 divisors (see below), whose sum is σ = 190540800. Its totient is φ = 29357280.

The previous prime is 91650161. The next prime is 91650199. The reversal of 91650198 is 89105619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91650199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26061 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (5954400).

Almost surely, 2^91650198 is an apocalyptic number.

91650198 is an abundant number, since it is smaller than the sum of its proper divisors (98890602).

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

91650198 is a wasteful number, since it uses less digits than its factorization.

91650198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 91650198 is about 9573.4109908642. The cubic root of 91650198 is about 450.8628678638.

The spelling of 91650198 in words is "ninety-one million, six hundred fifty thousand, one hundred ninety-eight".