91716534 has 144 divisors (see below), whose sum is σ = 262669680. Its totient is φ = 22861440.

The previous prime is 91716529. The next prime is 91716539. The reversal of 91716534 is 43561719.

It is an interprime number because it is at equal distance from previous prime (91716529) and next prime (91716539).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91716539) 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 71 ways as a sum of consecutive naturals, for example, 217644 + ... + 218064.

It is an arithmetic number, because the mean of its divisors is an integer number (1824095).

Almost surely, 2^91716534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91716534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131334840).

91716534 is an abundant number, since it is smaller than the sum of its proper divisors (170953146).

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

91716534 is a wasteful number, since it uses less digits than its factorization.

91716534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 465 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 91716534 is about 9576.8749600274. The cubic root of 91716534 is about 450.9716191337.

The spelling of 91716534 in words is "ninety-one million, seven hundred sixteen thousand, five hundred thirty-four".