91368713 has 2 divisors, whose sum is σ = 91368714. Its totient is φ = 91368712.

The previous prime is 91368689. The next prime is 91368721. The reversal of 91368713 is 31786319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57577744 + 33790969 = 7588^2 + 5813^2 .

It is a cyclic number.

It is not a de Polignac number, because 91368713 - 2⁶ = 91368649 is a prime.

It is not a weakly prime, because it can be changed into another prime (91308713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45684356 + 45684357.

It is an arithmetic number, because the mean of its divisors is an integer number (45684357).

Almost surely, 2^91368713 is an apocalyptic number.

It is an amenable number.

91368713 is a deficient number, since it is larger than the sum of its proper divisors (1).

91368713 is an equidigital number, since it uses as much as digits as its factorization.

91368713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 91368713 is about 9558.6982900393. The cubic root of 91368713 is about 450.4008165479.

The spelling of 91368713 in words is "ninety-one million, three hundred sixty-eight thousand, seven hundred thirteen".