85786663 has 2 divisors, whose sum is σ = 85786664. Its totient is φ = 85786662.

The previous prime is 85786661. The next prime is 85786667. The reversal of 85786663 is 36668758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85786663 - 2¹ = 85786661 is a prime.

Together with 85786661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85786661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42893331 + 42893332.

It is an arithmetic number, because the mean of its divisors is an integer number (42893332).

Almost surely, 2^85786663 is an apocalyptic number.

85786663 is a deficient number, since it is larger than the sum of its proper divisors (1).

85786663 is an equidigital number, since it uses as much as digits as its factorization.

85786663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 85786663 is about 9262.1089930966. The cubic root of 85786663 is about 441.0352054274.

The spelling of 85786663 in words is "eighty-five million, seven hundred eighty-six thousand, six hundred sixty-three".