8618866 has 4 divisors (see below), whose sum is σ = 12928302. Its totient is φ = 4309432.

The previous prime is 8618861. The next prime is 8618867. The reversal of 8618866 is 6688168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 2493241 = 2475^2 + 1579^2 .

It is a super-2 number, since 2×8618866² = 148569702251912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8618861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2154715 + ... + 2154718.

Almost surely, 2^8618866 is an apocalyptic number.

8618866 is a deficient number, since it is larger than the sum of its proper divisors (4309436).

8618866 is a wasteful number, since it uses less digits than its factorization.

8618866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309435.

The product of its digits is 110592, while the sum is 43.

The square root of 8618866 is about 2935.7905238624. The cubic root of 8618866 is about 205.0296685198.

The spelling of 8618866 in words is "eight million, six hundred eighteen thousand, eight hundred sixty-six".