8207664 has 40 divisors (see below), whose sum is σ = 21425712. Its totient is φ = 2707200.

The previous prime is 8207663. The next prime is 8207699. The reversal of 8207664 is 4667028.

It is not an unprimeable number, because it can be changed into a prime (8207663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4002 + ... + 5694.

Almost surely, 2^8207664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8207664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10712856).

8207664 is an abundant number, since it is smaller than the sum of its proper divisors (13218048).

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

8207664 is a wasteful number, since it uses less digits than its factorization.

8207664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8207664 is about 2864.9020925679. The cubic root of 8207664 is about 201.7157718759.

The spelling of 8207664 in words is "eight million, two hundred seven thousand, six hundred sixty-four".