8215085 has 8 divisors (see below), whose sum is σ = 9879576. Its totient is φ = 6557760.

The previous prime is 8215079. The next prime is 8215099. The reversal of 8215085 is 5805128.

8215085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1630729 + 6584356 = 1277^2 + 2566^2 .

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

It is not a de Polignac number, because 8215085 - 2²² = 4020781 is a prime.

It is a Duffinian number.

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, 1187 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (1234947).

Almost surely, 2^8215085 is an apocalyptic number.

It is an amenable number.

8215085 is a deficient number, since it is larger than the sum of its proper divisors (1664491).

8215085 is a wasteful number, since it uses less digits than its factorization.

8215085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 8215085 is about 2866.1969576427. The cubic root of 8215085 is about 201.7765476669.

The spelling of 8215085 in words is "eight million, two hundred fifteen thousand, eighty-five".