83663911 has 2 divisors, whose sum is σ = 83663912. Its totient is φ = 83663910.

The previous prime is 83663863. The next prime is 83663929. The reversal of 83663911 is 11936638.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83663911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83663971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41831955 + 41831956.

It is an arithmetic number, because the mean of its divisors is an integer number (41831956).

Almost surely, 2^83663911 is an apocalyptic number.

83663911 is a deficient number, since it is larger than the sum of its proper divisors (1).

83663911 is an equidigital number, since it uses as much as digits as its factorization.

83663911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 83663911 is about 9146.7978549873. The cubic root of 83663911 is about 437.3670427001.

It can be divided in two parts, 836639 and 11, that multiplied together give a palindrome (9203029).

The spelling of 83663911 in words is "eighty-three million, six hundred sixty-three thousand, nine hundred eleven".