85840786 has 16 divisors (see below), whose sum is σ = 138573720. Its totient is φ = 39732480.

The previous prime is 85840751. The next prime is 85840787. The reversal of 85840786 is 68704858.

It can be written as a sum of positive squares in 4 ways, for example, as 70040161 + 15800625 = 8369^2 + 3975^2 .

It is not an unprimeable number, because it can be changed into a prime (85840787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18621 + ... + 22768.

Almost surely, 2^85840786 is an apocalyptic number.

85840786 is a deficient number, since it is larger than the sum of its proper divisors (52732934).

85840786 is a wasteful number, since it uses less digits than its factorization.

85840786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41469.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 85840786 is about 9265.0302751799. The cubic root of 85840786 is about 441.1279359656.

The spelling of 85840786 in words is "eighty-five million, eight hundred forty thousand, seven hundred eighty-six".