91683513 has 6 divisors (see below), whose sum is σ = 132431754. Its totient is φ = 61122336.

The previous prime is 91683491. The next prime is 91683541. The reversal of 91683513 is 31538619.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78375609 + 13307904 = 8853^2 + 3648^2 .

It is not a de Polignac number, because 91683513 - 2¹⁴ = 91667129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91683583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5093520 + ... + 5093537.

It is an arithmetic number, because the mean of its divisors is an integer number (22071959).

Almost surely, 2^91683513 is an apocalyptic number.

It is an amenable number.

91683513 is a deficient number, since it is larger than the sum of its proper divisors (40748241).

91683513 is a wasteful number, since it uses less digits than its factorization.

91683513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187063 (or 10187060 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 91683513 is about 9575.1508082118. The cubic root of 91683513 is about 450.9174910476.

The spelling of 91683513 in words is "ninety-one million, six hundred eighty-three thousand, five hundred thirteen".