91717013 has 4 divisors (see below), whose sum is σ = 91771968. Its totient is φ = 91662060.

The previous prime is 91717007. The next prime is 91717027. The reversal of 91717013 is 31071719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91717013 - 2¹⁰ = 91715989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91717063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24893 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (22942992).

Almost surely, 2^91717013 is an apocalyptic number.

It is an amenable number.

91717013 is a deficient number, since it is larger than the sum of its proper divisors (54955).

91717013 is a wasteful number, since it uses less digits than its factorization.

91717013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54954.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 91717013 is about 9576.8999681525. The cubic root of 91717013 is about 450.9724042158.

The spelling of 91717013 in words is "ninety-one million, seven hundred seventeen thousand, thirteen".