85840787 has 2 divisors, whose sum is σ = 85840788. Its totient is φ = 85840786.

The previous prime is 85840751. The next prime is 85840793. The reversal of 85840787 is 78704858.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85840787 - 2²² = 81646483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85840717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42920393 + 42920394.

It is an arithmetic number, because the mean of its divisors is an integer number (42920394).

Almost surely, 2^85840787 is an apocalyptic number.

85840787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85840787 is an equidigital number, since it uses as much as digits as its factorization.

85840787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 85840787 is about 9265.0303291463. The cubic root of 85840787 is about 441.1279376785.

The spelling of 85840787 in words is "eighty-five million, eight hundred forty thousand, seven hundred eighty-seven".