85688311 has 2 divisors, whose sum is σ = 85688312. Its totient is φ = 85688310.

The previous prime is 85688249. The next prime is 85688321. The reversal of 85688311 is 11388658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85688311 - 2⁹ = 85687799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85688321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42844155 + 42844156.

It is an arithmetic number, because the mean of its divisors is an integer number (42844156).

Almost surely, 2^85688311 is an apocalyptic number.

85688311 is a deficient number, since it is larger than the sum of its proper divisors (1).

85688311 is an equidigital number, since it uses as much as digits as its factorization.

85688311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 85688311 is about 9256.7980965342. The cubic root of 85688311 is about 440.8665961499.

The spelling of 85688311 in words is "eighty-five million, six hundred eighty-eight thousand, three hundred eleven".