91668883 has 2 divisors, whose sum is σ = 91668884. Its totient is φ = 91668882.

The previous prime is 91668851. The next prime is 91668887. The reversal of 91668883 is 38886619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91668883 - 2⁵ = 91668851 is a prime.

It is a super-2 number, since 2×91668883² = 16806368220935378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91668887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45834441 + 45834442.

It is an arithmetic number, because the mean of its divisors is an integer number (45834442).

Almost surely, 2^91668883 is an apocalyptic number.

91668883 is a deficient number, since it is larger than the sum of its proper divisors (1).

91668883 is an equidigital number, since it uses as much as digits as its factorization.

91668883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 49.

The square root of 91668883 is about 9574.3868210972. The cubic root of 91668883 is about 450.8935053690.

The spelling of 91668883 in words is "ninety-one million, six hundred sixty-eight thousand, eight hundred eighty-three".