85215308 has 12 divisors (see below), whose sum is σ = 151940880. Its totient is φ = 41803632.

The previous prime is 85215301. The next prime is 85215313. The reversal of 85215308 is 80351258.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85215301) 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, 200768 + ... + 201191.

It is an arithmetic number, because the mean of its divisors is an integer number (12661740).

Almost surely, 2^85215308 is an apocalyptic number.

It is an amenable number.

85215308 is a deficient number, since it is larger than the sum of its proper divisors (66725572).

85215308 is a wasteful number, since it uses less digits than its factorization.

85215308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402016 (or 402014 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 85215308 is about 9231.2137880129. The cubic root of 85215308 is about 440.0538983561.

The spelling of 85215308 in words is "eighty-five million, two hundred fifteen thousand, three hundred eight".