8499664 has 10 divisors (see below), whose sum is σ = 16468130. Its totient is φ = 4249824.

The previous prime is 8499661. The next prime is 8499683. The reversal of 8499664 is 4669948.

It can be written as a sum of positive squares in only one way, i.e., 7333264 + 1166400 = 2708^2 + 1080^2 .

It is a super-2 number, since 2×8499664² = 144488576225792, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8499661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265599 + ... + 265630.

It is an arithmetic number, because the mean of its divisors is an integer number (1646813).

Almost surely, 2^8499664 is an apocalyptic number.

It is an amenable number.

8499664 is a deficient number, since it is larger than the sum of its proper divisors (7968466).

8499664 is a wasteful number, since it uses less digits than its factorization.

8499664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531237 (or 531231 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 8499664 is about 2915.4183233286. The cubic root of 8499664 is about 204.0800659700.

The spelling of 8499664 in words is "eight million, four hundred ninety-nine thousand, six hundred sixty-four".