8611618 has 8 divisors (see below), whose sum is σ = 12989340. Its totient is φ = 4281840.

The previous prime is 8611613. The next prime is 8611619. The reversal of 8611618 is 8161168.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6517809 + 2093809 = 2553^2 + 1447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8611618.

It is not an unprimeable number, because it can be changed into a prime (8611613) 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, 11533 + ... + 12256.

Almost surely, 2^8611618 is an apocalyptic number.

8611618 is a deficient number, since it is larger than the sum of its proper divisors (4377722).

8611618 is a wasteful number, since it uses less digits than its factorization.

8611618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23972.

The product of its digits is 2304, while the sum is 31.

The square root of 8611618 is about 2934.5558437351. Note that the first 3 decimals coincide. The cubic root of 8611618 is about 204.9721794489.

It can be divided in two parts, 8611 and 618, that added together give a palindrome (9229).

The spelling of 8611618 in words is "eight million, six hundred eleven thousand, six hundred eighteen".