8554661 has 4 divisors (see below), whose sum is σ = 8560524. Its totient is φ = 8548800.

The previous prime is 8554649. The next prime is 8554669. The reversal of 8554661 is 1664558.

It is a happy number.

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 can be written as a sum of positive squares in 2 ways, for example, as 748225 + 7806436 = 865^2 + 2794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8554661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8554669) 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, 1181 + ... + 4301.

It is an arithmetic number, because the mean of its divisors is an integer number (2140131).

Almost surely, 2^8554661 is an apocalyptic number.

It is an amenable number.

8554661 is a deficient number, since it is larger than the sum of its proper divisors (5863).

8554661 is a wasteful number, since it uses less digits than its factorization.

8554661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862.

The product of its digits is 28800, while the sum is 35.

The square root of 8554661 is about 2924.8352090332. The cubic root of 8554661 is about 204.5192860859.

The spelling of 8554661 in words is "eight million, five hundred fifty-four thousand, six hundred sixty-one".