8372165 has 4 divisors (see below), whose sum is σ = 10046604. Its totient is φ = 6697728.

The previous prime is 8372153. The next prime is 8372173. The reversal of 8372165 is 5612738.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5612738 = 2 ⋅2806369.

It can be written as a sum of positive squares in 2 ways, for example, as 4739329 + 3632836 = 2177^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 8372165 - 2¹⁰ = 8371141 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837212 + ... + 837221.

It is an arithmetic number, because the mean of its divisors is an integer number (2511651).

Almost surely, 2^8372165 is an apocalyptic number.

It is an amenable number.

8372165 is a deficient number, since it is larger than the sum of its proper divisors (1674439).

8372165 is a wasteful number, since it uses less digits than its factorization.

8372165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674438.

The product of its digits is 10080, while the sum is 32.

The square root of 8372165 is about 2893.4693708419. The cubic root of 8372165 is about 203.0544880305.

The spelling of 8372165 in words is "eight million, three hundred seventy-two thousand, one hundred sixty-five".