8727661 has 4 divisors (see below), whose sum is σ = 8847292. Its totient is φ = 8608032.

The previous prime is 8727659. The next prime is 8727673. The reversal of 8727661 is 1667278.

It is a happy number.

8727661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3861225 + 4866436 = 1965^2 + 2206^2 .

It is a cyclic number.

It is not a de Polignac number, because 8727661 - 2¹ = 8727659 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 8727661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8727601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59706 + ... + 59851.

It is an arithmetic number, because the mean of its divisors is an integer number (2211823).

Almost surely, 2^8727661 is an apocalyptic number.

It is an amenable number.

8727661 is a deficient number, since it is larger than the sum of its proper divisors (119631).

8727661 is a wasteful number, since it uses less digits than its factorization.

8727661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119630.

The product of its digits is 28224, while the sum is 37.

The square root of 8727661 is about 2954.2614982428. The cubic root of 8727661 is about 205.8887528911. Note that the first 3 decimals are identical.

The spelling of 8727661 in words is "eight million, seven hundred twenty-seven thousand, six hundred sixty-one".