8821618 has 16 divisors (see below), whose sum is σ = 14555520. Its totient is φ = 3984336.

The previous prime is 8821583. The next prime is 8821633. The reversal of 8821618 is 8161288.

8821618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 2^8821618 is an apocalyptic number.

8821618 is a deficient number, since it is larger than the sum of its proper divisors (5733902).

8821618 is a wasteful number, since it uses less digits than its factorization.

8821618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7281.

The product of its digits is 6144, while the sum is 34.

The square root of 8821618 is about 2970.1208729612. The cubic root of 8821618 is about 206.6249441732.

It can be divided in two parts, 882 and 1618, that added together give a square (2500 = 50²).

The spelling of 8821618 in words is "eight million, eight hundred twenty-one thousand, six hundred eighteen".