85634233 has 2 divisors, whose sum is σ = 85634234. Its totient is φ = 85634232.

The previous prime is 85634203. The next prime is 85634239. The reversal of 85634233 is 33243658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74425129 + 11209104 = 8627^2 + 3348^2 .

It is a cyclic number.

It is not a de Polignac number, because 85634233 - 2¹³ = 85626041 is a prime.

It is a super-2 number, since 2×85634233² = 14666443722996578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85634239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42817116 + 42817117.

It is an arithmetic number, because the mean of its divisors is an integer number (42817117).

Almost surely, 2^85634233 is an apocalyptic number.

It is an amenable number.

85634233 is a deficient number, since it is larger than the sum of its proper divisors (1).

85634233 is an equidigital number, since it uses as much as digits as its factorization.

85634233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 34.

The square root of 85634233 is about 9253.8766471139. The cubic root of 85634233 is about 440.7738328132.

The spelling of 85634233 in words is "eighty-five million, six hundred thirty-four thousand, two hundred thirty-three".