7822643 has 4 divisors (see below), whose sum is σ = 7828248. Its totient is φ = 7817040.

The previous prime is 7822627. The next prime is 7822657. The reversal of 7822643 is 3462287.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7822643 - 2⁴ = 7822627 is a prime.

It is a super-2 number, since 2×7822643² = 122387487010898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7822613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (1957062).

Almost surely, 2^7822643 is an apocalyptic number.

7822643 is a deficient number, since it is larger than the sum of its proper divisors (5605).

7822643 is a wasteful number, since it uses less digits than its factorization.

7822643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604.

The product of its digits is 16128, while the sum is 32.

The square root of 7822643 is about 2796.8988183343. The cubic root of 7822643 is about 198.5109664074.

The spelling of 7822643 in words is "seven million, eight hundred twenty-two thousand, six hundred forty-three".