85646263 has 2 divisors, whose sum is σ = 85646264. Its totient is φ = 85646262.

The previous prime is 85646237. The next prime is 85646269. The reversal of 85646263 is 36264658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85646263 - 2²¹ = 83549111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85646269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42823131 + 42823132.

It is an arithmetic number, because the mean of its divisors is an integer number (42823132).

Almost surely, 2^85646263 is an apocalyptic number.

85646263 is a deficient number, since it is larger than the sum of its proper divisors (1).

85646263 is an equidigital number, since it uses as much as digits as its factorization.

85646263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 85646263 is about 9254.5266221455. The cubic root of 85646263 is about 440.7944719927.

The spelling of 85646263 in words is "eighty-five million, six hundred forty-six thousand, two hundred sixty-three".