8489665 has 8 divisors (see below), whose sum is σ = 10436328. Its totient is φ = 6625920.

The previous prime is 8489659. The next prime is 8489729. The reversal of 8489665 is 5669848.

It is a Cunningham number, because it is equal to 204³+1.

It can be written as a sum of positive squares in 4 ways, for example, as 332929 + 8156736 = 577^2 + 2856^2 .

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

It is not a de Polignac number, because 8489665 - 2⁵ = 8489633 is a prime.

It is a Duffinian 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, 20502 + ... + 20911.

It is an arithmetic number, because the mean of its divisors is an integer number (1304541).

Almost surely, 2^8489665 is an apocalyptic number.

It is an amenable number.

8489665 is a deficient number, since it is larger than the sum of its proper divisors (1946663).

8489665 is a wasteful number, since it uses less digits than its factorization.

8489665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41459.

The product of its digits is 414720, while the sum is 46.

The square root of 8489665 is about 2913.7029704484. The cubic root of 8489665 is about 204.0000080097. Note that the first 5 decimals are identical.

The spelling of 8489665 in words is "eight million, four hundred eighty-nine thousand, six hundred sixty-five".