91730633 has 2 divisors, whose sum is σ = 91730634. Its totient is φ = 91730632.

The previous prime is 91730627. The next prime is 91730677. The reversal of 91730633 is 33603719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91336249 + 394384 = 9557^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 91730633 - 2⁸ = 91730377 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91730633.

It is not a weakly prime, because it can be changed into another prime (91730533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45865316 + 45865317.

It is an arithmetic number, because the mean of its divisors is an integer number (45865317).

Almost surely, 2^91730633 is an apocalyptic number.

It is an amenable number.

91730633 is a deficient number, since it is larger than the sum of its proper divisors (1).

91730633 is an equidigital number, since it uses as much as digits as its factorization.

91730633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 91730633 is about 9577.6110278086. The cubic root of 91730633 is about 450.9947262835.

The spelling of 91730633 in words is "ninety-one million, seven hundred thirty thousand, six hundred thirty-three".