86445787 has 2 divisors, whose sum is σ = 86445788. Its totient is φ = 86445786.

The previous prime is 86445773. The next prime is 86445803. The reversal of 86445787 is 78754468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86445787 - 2¹¹ = 86443739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86445787.

It is not a weakly prime, because it can be changed into another prime (86445757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43222893 + 43222894.

It is an arithmetic number, because the mean of its divisors is an integer number (43222894).

Almost surely, 2^86445787 is an apocalyptic number.

86445787 is a deficient number, since it is larger than the sum of its proper divisors (1).

86445787 is an equidigital number, since it uses as much as digits as its factorization.

86445787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 49.

The square root of 86445787 is about 9297.6226531302. The cubic root of 86445787 is about 442.1618589859.

The spelling of 86445787 in words is "eighty-six million, four hundred forty-five thousand, seven hundred eighty-seven".