91650986 has 16 divisors (see below), whose sum is σ = 157659264. Its totient is φ = 39143184.

The previous prime is 91650983. The next prime is 91651009. The reversal of 91650986 is 68905619.

It is not an unprimeable number, because it can be changed into a prime (91650983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7070 + ... + 15273.

It is an arithmetic number, because the mean of its divisors is an integer number (9853704).

Almost surely, 2^91650986 is an apocalyptic number.

91650986 is a deficient number, since it is larger than the sum of its proper divisors (66008278).

91650986 is a wasteful number, since it uses less digits than its factorization.

91650986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22645.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 91650986 is about 9573.4521464308. The cubic root of 91650986 is about 450.8641600193.

The spelling of 91650986 in words is "ninety-one million, six hundred fifty thousand, nine hundred eighty-six".