7822661 has 16 divisors (see below), whose sum is σ = 10268160. Its totient is φ = 5773680.

The previous prime is 7822657. The next prime is 7822679. The reversal of 7822661 is 1662287.

7822661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7822661 - 2² = 7822657 is a prime.

It is a super-2 number, since 2×7822661² = 122388050241842, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7822621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1211 + ... + 4136.

It is an arithmetic number, because the mean of its divisors is an integer number (641760).

Almost surely, 2^7822661 is an apocalyptic number.

It is an amenable number.

7822661 is a deficient number, since it is larger than the sum of its proper divisors (2445499).

7822661 is a wasteful number, since it uses less digits than its factorization.

7822661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384.

The product of its digits is 8064, while the sum is 32.

The square root of 7822661 is about 2796.9020361822. The cubic root of 7822661 is about 198.5111186661.

It can be divided in two parts, 78226 and 61, that added together give a palindrome (78287).

The spelling of 7822661 in words is "seven million, eight hundred twenty-two thousand, six hundred sixty-one".