85686767 has 2 divisors, whose sum is σ = 85686768. Its totient is φ = 85686766.

The previous prime is 85686737. The next prime is 85686791. The reversal of 85686767 is 76768658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85686767 - 2¹² = 85682671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85686737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42843383 + 42843384.

It is an arithmetic number, because the mean of its divisors is an integer number (42843384).

Almost surely, 2^85686767 is an apocalyptic number.

85686767 is a deficient number, since it is larger than the sum of its proper divisors (1).

85686767 is an equidigital number, since it uses as much as digits as its factorization.

85686767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 53.

The square root of 85686767 is about 9256.7146979909. The cubic root of 85686767 is about 440.8639481726.

The spelling of 85686767 in words is "eighty-five million, six hundred eighty-six thousand, seven hundred sixty-seven".