91617743 has 16 divisors (see below), whose sum is σ = 112529664. Its totient is φ = 72800640.

The previous prime is 91617731. The next prime is 91617751. The reversal of 91617743 is 34771619.

It is a cyclic number.

It is not a de Polignac number, because 91617743 - 2⁴ = 91617727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91617697 and 91617706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91617793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2228 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (7033104).

Almost surely, 2^91617743 is an apocalyptic number.

91617743 is a deficient number, since it is larger than the sum of its proper divisors (20911921).

91617743 is a wasteful number, since it uses less digits than its factorization.

91617743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11582.

The product of its digits is 31752, while the sum is 38.

The square root of 91617743 is about 9571.7157814051. The cubic root of 91617743 is about 450.8096420033.

The spelling of 91617743 in words is "ninety-one million, six hundred seventeen thousand, seven hundred forty-three".