85818315 has 16 divisors (see below), whose sum is σ = 149792256. Its totient is φ = 41608800.

The previous prime is 85818301. The next prime is 85818319. The reversal of 85818315 is 51381858.

It is not a de Polignac number, because 85818315 - 2⁹ = 85817803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85818319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259891 + ... + 260220.

It is an arithmetic number, because the mean of its divisors is an integer number (9362016).

Almost surely, 2^85818315 is an apocalyptic number.

85818315 is a deficient number, since it is larger than the sum of its proper divisors (63973941).

85818315 is a wasteful number, since it uses less digits than its factorization.

85818315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520130.

The product of its digits is 38400, while the sum is 39.

The square root of 85818315 is about 9263.8175176328. The cubic root of 85818315 is about 441.0894404694.

The spelling of 85818315 in words is "eighty-five million, eight hundred eighteen thousand, three hundred fifteen".