84225787 has 2 divisors, whose sum is σ = 84225788. Its totient is φ = 84225786.

The previous prime is 84225781. The next prime is 84225797. The reversal of 84225787 is 78752248.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84225787 is a prime.

It is not a weakly prime, because it can be changed into another prime (84225781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42112893 + 42112894.

It is an arithmetic number, because the mean of its divisors is an integer number (42112894).

Almost surely, 2^84225787 is an apocalyptic number.

84225787 is a deficient number, since it is larger than the sum of its proper divisors (1).

84225787 is an equidigital number, since it uses as much as digits as its factorization.

84225787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 43.

The square root of 84225787 is about 9177.4608144083. The cubic root of 84225787 is about 438.3439591590.

The spelling of 84225787 in words is "eighty-four million, two hundred twenty-five thousand, seven hundred eighty-seven".