85696861 has 2 divisors, whose sum is σ = 85696862. Its totient is φ = 85696860.

The previous prime is 85696843. The next prime is 85696883. The reversal of 85696861 is 16869658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 32319225 = 7306^2 + 5685^2 .

It is a cyclic number.

It is not a de Polignac number, because 85696861 - 2⁹ = 85696349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85696811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42848430 + 42848431.

It is an arithmetic number, because the mean of its divisors is an integer number (42848431).

Almost surely, 2^85696861 is an apocalyptic number.

It is an amenable number.

85696861 is a deficient number, since it is larger than the sum of its proper divisors (1).

85696861 is an equidigital number, since it uses as much as digits as its factorization.

85696861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 85696861 is about 9257.2599077697. The cubic root of 85696861 is about 440.8812589201.

The spelling of 85696861 in words is "eighty-five million, six hundred ninety-six thousand, eight hundred sixty-one".