91646745 has 32 divisors (see below), whose sum is σ = 155934720. Its totient is φ = 45803520.

The previous prime is 91646741. The next prime is 91646749. The reversal of 91646745 is 54764619.

It is an interprime number because it is at equal distance from previous prime (91646741) and next prime (91646749).

It is not a de Polignac number, because 91646745 - 2² = 91646741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91646697 and 91646706.

It is not an unprimeable number, because it can be changed into a prime (91646741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71016 + ... + 72294.

It is an arithmetic number, because the mean of its divisors is an integer number (4872960).

Almost surely, 2^91646745 is an apocalyptic number.

It is an amenable number.

91646745 is a deficient number, since it is larger than the sum of its proper divisors (64287975).

91646745 is a wasteful number, since it uses less digits than its factorization.

91646745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its digits is 181440, while the sum is 42.

The square root of 91646745 is about 9573.2306459209. The cubic root of 91646745 is about 450.8572055773.

The spelling of 91646745 in words is "ninety-one million, six hundred forty-six thousand, seven hundred forty-five".