8664625 has 8 divisors (see below), whose sum is σ = 10813608. Its totient is φ = 6931600.

The previous prime is 8664613. The next prime is 8664661. The reversal of 8664625 is 5264668.

It can be written as a sum of positive squares in 4 ways, for example, as 467856 + 8196769 = 684^2 + 2863^2 .

It is not a de Polignac number, because 8664625 - 2¹³ = 8656433 is a prime.

It is a Duffinian number.

8664625 is a lucky number.

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, 34534 + ... + 34783.

It is an arithmetic number, because the mean of its divisors is an integer number (1351701).

Almost surely, 2^8664625 is an apocalyptic number.

It is an amenable number.

8664625 is a deficient number, since it is larger than the sum of its proper divisors (2148983).

8664625 is an equidigital number, since it uses as much as digits as its factorization.

8664625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69332 (or 69322 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 8664625 is about 2943.5735085097. The cubic root of 8664625 is about 205.3918738629.

The spelling of 8664625 in words is "eight million, six hundred sixty-four thousand, six hundred twenty-five".