91712 has 14 divisors (see below), whose sum is σ = 182118. Its totient is φ = 45824.

The previous prime is 91711. The next prime is 91733. The reversal of 91712 is 21719.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 4096 = 296^2 + 64^2 .

It is a super-2 number, since 2×91712² = 16822181888, which contains 22 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (91711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653 + ... + 780.

2⁹¹⁷¹² is an apocalyptic number.

It is an amenable number.

91712 is a deficient number, since it is larger than the sum of its proper divisors (90406).

91712 is a wasteful number, since it uses less digits than its factorization.

91712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1435 counting only the distinct ones).

The product of its digits is 126, while the sum is 20.

The square root of 91712 is about 302.8398916920. The cubic root of 91712 is about 45.0964187762.

It can be divided in two parts, 917 and 12, that added together give a palindrome (929).

The spelling of 91712 in words is "ninety-one thousand, seven hundred twelve".