85422787 has 4 divisors (see below), whose sum is σ = 85627080. Its totient is φ = 85218496.

The previous prime is 85422767. The next prime is 85422793. The reversal of 85422787 is 78722458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85422787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85422767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101518 + ... + 102355.

It is an arithmetic number, because the mean of its divisors is an integer number (21406770).

Almost surely, 2^85422787 is an apocalyptic number.

85422787 is a deficient number, since it is larger than the sum of its proper divisors (204293).

85422787 is a wasteful number, since it uses less digits than its factorization.

85422787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204292.

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

The square root of 85422787 is about 9242.4448605334. Note that the first 3 decimals coincide. The cubic root of 85422787 is about 440.4107510761.

The spelling of 85422787 in words is "eighty-five million, four hundred twenty-two thousand, seven hundred eighty-seven".