8122661 has 4 divisors (see below), whose sum is σ = 8128512. Its totient is φ = 8116812.

The previous prime is 8122649. The next prime is 8122669. The reversal of 8122661 is 1662218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1662218 = 2 ⋅831109.

It is a cyclic number.

It is not a de Polignac number, because 8122661 - 2¹⁴ = 8106277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8122661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8122669) 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, 476 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (2032128).

Almost surely, 2^8122661 is an apocalyptic number.

It is an amenable number.

8122661 is a deficient number, since it is larger than the sum of its proper divisors (5851).

8122661 is a wasteful number, since it uses less digits than its factorization.

8122661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850.

The product of its digits is 1152, while the sum is 26.

The square root of 8122661 is about 2850.0282454741. The cubic root of 8122661 is about 201.0169948420.

Adding to 8122661 its reverse (1662218), we get a palindrome (9784879).

The spelling of 8122661 in words is "eight million, one hundred twenty-two thousand, six hundred sixty-one".