8625666 has 24 divisors (see below), whose sum is σ = 20068560. Its totient is φ = 2464392.

The previous prime is 8625649. The next prime is 8625689. The reversal of 8625666 is 6665268.

It is a super-2 number, since 2×8625666² = 148804227887112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14376 + ... + 14963.

It is an arithmetic number, because the mean of its divisors is an integer number (836190).

Almost surely, 2^8625666 is an apocalyptic number.

8625666 is an abundant number, since it is smaller than the sum of its proper divisors (11442894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8625666 is a wasteful number, since it uses less digits than its factorization.

8625666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29358 (or 29351 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 8625666 is about 2936.9484162988. The cubic root of 8625666 is about 205.0835748863.

It can be divided in two parts, 86 and 25666, that added together give a palindrome (25752).

The spelling of 8625666 in words is "eight million, six hundred twenty-five thousand, six hundred sixty-six".