7841065 has 4 divisors (see below), whose sum is σ = 9409284. Its totient is φ = 6272848.

The previous prime is 7841033. The next prime is 7841083. The reversal of 7841065 is 5601487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5601487 = 1559 ⋅3593.

It can be written as a sum of positive squares in 2 ways, for example, as 2143296 + 5697769 = 1464^2 + 2387^2 .

It is a cyclic number.

It is not a de Polignac number, because 7841065 - 2⁵ = 7841033 is a prime.

It is a super-2 number, since 2×7841065² = 122964600668450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 784102 + ... + 784111.

It is an arithmetic number, because the mean of its divisors is an integer number (2352321).

Almost surely, 2^7841065 is an apocalyptic number.

It is an amenable number.

7841065 is a deficient number, since it is larger than the sum of its proper divisors (1568219).

7841065 is a wasteful number, since it uses less digits than its factorization.

7841065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568218.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 7841065 is about 2800.1901721133. The cubic root of 7841065 is about 198.6666726098. Note that the first 4 decimals are identical.

It can be divided in two parts, 784 and 1065, that added together give a square (1849 = 43²).

The spelling of 7841065 in words is "seven million, eight hundred forty-one thousand, sixty-five".