82249691 has 2 divisors, whose sum is σ = 82249692. Its totient is φ = 82249690.

The previous prime is 82249627. The next prime is 82249703. The reversal of 82249691 is 19694228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82249691 - 2⁶ = 82249627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (82249091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41124845 + 41124846.

It is an arithmetic number, because the mean of its divisors is an integer number (41124846).

Almost surely, 2^82249691 is an apocalyptic number.

82249691 is a deficient number, since it is larger than the sum of its proper divisors (1).

82249691 is an equidigital number, since it uses as much as digits as its factorization.

82249691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 82249691 is about 9069.1615378711. The cubic root of 82249691 is about 434.8886683864. Note that the first 3 decimals are identical.

The spelling of 82249691 in words is "eighty-two million, two hundred forty-nine thousand, six hundred ninety-one".