91063783 has 2 divisors, whose sum is σ = 91063784. Its totient is φ = 91063782.

The previous prime is 91063759. The next prime is 91063801. The reversal of 91063783 is 38736019.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91063783 is a prime.

It is a super-2 number, since 2×91063783² = 16585225148542178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91063183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45531891 + 45531892.

It is an arithmetic number, because the mean of its divisors is an integer number (45531892).

Almost surely, 2^91063783 is an apocalyptic number.

91063783 is a deficient number, since it is larger than the sum of its proper divisors (1).

91063783 is an equidigital number, since it uses as much as digits as its factorization.

91063783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 91063783 is about 9542.7345661503. The cubic root of 91063783 is about 449.8992087021.

The spelling of 91063783 in words is "ninety-one million, sixty-three thousand, seven hundred eighty-three".