7722841 has 9 divisors (see below), whose sum is σ = 9006399. Its totient is φ = 6602904.

The previous prime is 7722839. The next prime is 7722851. The reversal of 7722841 is 1482277.

The square root of 7722841 is 2779.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5175625 + 2547216 = 2275^2 + 1596^2 .

It is not a de Polignac number, because 7722841 - 2¹ = 7722839 is a prime.

It is a super-2 number, since 2×7722841² = 119284546222562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7722851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19255 + ... + 19651.

It is an arithmetic number, because the mean of its divisors is an integer number (1000711).

Almost surely, 2^7722841 is an apocalyptic number.

7722841 is the 2779-th square number.

7722841 is the 1390-th centered octagonal number.

It is an amenable number.

7722841 is a deficient number, since it is larger than the sum of its proper divisors (1283558).

7722841 is an frugal number, since it uses more digits than its factorization.

7722841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 404 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The cubic root of 7722841 is about 197.6631435201.

The spelling of 7722841 in words is "seven million, seven hundred twenty-two thousand, eight hundred forty-one".