85655711 has 2 divisors, whose sum is σ = 85655712. Its totient is φ = 85655710.

The previous prime is 85655677. The next prime is 85655719. The reversal of 85655711 is 11755658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85655711 - 2²² = 81461407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85655719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42827855 + 42827856.

It is an arithmetic number, because the mean of its divisors is an integer number (42827856).

Almost surely, 2^85655711 is an apocalyptic number.

85655711 is a deficient number, since it is larger than the sum of its proper divisors (1).

85655711 is an equidigital number, since it uses as much as digits as its factorization.

85655711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 38.

The square root of 85655711 is about 9255.0370609739. The cubic root of 85655711 is about 440.8106800283.

The spelling of 85655711 in words is "eighty-five million, six hundred fifty-five thousand, seven hundred eleven".