7822105 has 4 divisors (see below), whose sum is σ = 9386532. Its totient is φ = 6257680.

The previous prime is 7822039. The next prime is 7822109. The reversal of 7822105 is 5012287.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2637376 + 5184729 = 1624^2 + 2277^2 .

It is not a de Polignac number, because 7822105 - 2¹⁵ = 7789337 is a prime.

It is a super-2 number, since 2×7822105² = 122370653262050, which contains 22 as substring.

It is a Duffinian number.

7822105 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7822105.

It is not an unprimeable number, because it can be changed into a prime (7822109) 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, 782206 + ... + 782215.

It is an arithmetic number, because the mean of its divisors is an integer number (2346633).

Almost surely, 2^7822105 is an apocalyptic number.

It is an amenable number.

7822105 is a deficient number, since it is larger than the sum of its proper divisors (1564427).

7822105 is a wasteful number, since it uses less digits than its factorization.

7822105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564426.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7822105 is about 2796.8026387287. The cubic root of 7822105 is about 198.5064154584.

The spelling of 7822105 in words is "seven million, eight hundred twenty-two thousand, one hundred five".