85205215 has 8 divisors (see below), whose sum is σ = 107627760. Its totient is φ = 64576512.

The previous prime is 85205201. The next prime is 85205221. The reversal of 85205215 is 51250258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85205215 - 2²¹ = 83108063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448354 + ... + 448543.

It is an arithmetic number, because the mean of its divisors is an integer number (13453470).

Almost surely, 2^85205215 is an apocalyptic number.

85205215 is a deficient number, since it is larger than the sum of its proper divisors (22422545).

85205215 is a wasteful number, since it uses less digits than its factorization.

85205215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896921.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 85205215 is about 9230.6670939862. The cubic root of 85205215 is about 440.0365241719.

The spelling of 85205215 in words is "eighty-five million, two hundred five thousand, two hundred fifteen".