8215165 has 16 divisors (see below), whose sum is σ = 11930112. Its totient is φ = 5301504.

The previous prime is 8215157. The next prime is 8215171. The reversal of 8215165 is 5615128.

It is a cyclic number.

It is not a de Polignac number, because 8215165 - 2³ = 8215157 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 15 ways as a sum of consecutive naturals, for example, 6309 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (745632).

Almost surely, 2^8215165 is an apocalyptic number.

8215165 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8215165 is a deficient number, since it is larger than the sum of its proper divisors (3714947).

8215165 is a wasteful number, since it uses less digits than its factorization.

8215165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13836.

The product of its digits is 2400, while the sum is 28.

The square root of 8215165 is about 2866.2109133837. The cubic root of 8215165 is about 201.7772026438. Note that the first 3 decimals are identical.

The spelling of 8215165 in words is "eight million, two hundred fifteen thousand, one hundred sixty-five".