82111663 has 2 divisors, whose sum is σ = 82111664. Its totient is φ = 82111662.

The previous prime is 82111637. The next prime is 82111669. The reversal of 82111663 is 36611128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82111663 - 2²¹ = 80014511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82111669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41055831 + 41055832.

It is an arithmetic number, because the mean of its divisors is an integer number (41055832).

Almost surely, 2^82111663 is an apocalyptic number.

82111663 is a deficient number, since it is larger than the sum of its proper divisors (1).

82111663 is an equidigital number, since it uses as much as digits as its factorization.

82111663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 82111663 is about 9061.5485983357. The cubic root of 82111663 is about 434.6452615039.

The spelling of 82111663 in words is "eighty-two million, one hundred eleven thousand, six hundred sixty-three".