8361865 has 8 divisors (see below), whose sum is σ = 10073160. Its totient is φ = 6663552.

The previous prime is 8361853. The next prime is 8361901. The reversal of 8361865 is 5681638.

It can be written as a sum of positive squares in 4 ways, for example, as 273529 + 8088336 = 523^2 + 2844^2 .

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 8361865 - 2⁵ = 8361833 is a prime.

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, 1764 + ... + 4453.

It is an arithmetic number, because the mean of its divisors is an integer number (1259145).

Almost surely, 2^8361865 is an apocalyptic number.

It is an amenable number.

8361865 is a deficient number, since it is larger than the sum of its proper divisors (1711295).

8361865 is a wasteful number, since it uses less digits than its factorization.

8361865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491.

The product of its digits is 34560, while the sum is 37.

The square root of 8361865 is about 2891.6889528440. The cubic root of 8361865 is about 202.9711834333.

It can be divided in two parts, 836 and 1865, that added together give a triangular number (2701 = T₇₃).

The spelling of 8361865 in words is "eight million, three hundred sixty-one thousand, eight hundred sixty-five".