7852865 has 8 divisors (see below), whose sum is σ = 9439848. Its totient is φ = 6271360.

The previous prime is 7852811. The next prime is 7852877. The reversal of 7852865 is 5682587.

It can be written as a sum of positive squares in 4 ways, for example, as 1263376 + 6589489 = 1124^2 + 2567^2 .

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

It is not a de Polignac number, because 7852865 - 2⁸ = 7852609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3149 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (1179981).

Almost surely, 2^7852865 is an apocalyptic number.

It is an amenable number.

7852865 is a deficient number, since it is larger than the sum of its proper divisors (1586983).

7852865 is a wasteful number, since it uses less digits than its factorization.

7852865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 134400, while the sum is 41.

The square root of 7852865 is about 2802.2963797571. The cubic root of 7852865 is about 198.7662803272.

The spelling of 7852865 in words is "seven million, eight hundred fifty-two thousand, eight hundred sixty-five".