3217664 has 18 divisors (see below), whose sum is σ = 6423270. Its totient is φ = 1608704.

The previous prime is 3217663. The next prime is 3217673. The reversal of 3217664 is 4667123.

It can be written as a sum of positive squares in only one way, i.e., 3211264 + 6400 = 1792^2 + 80^2 .

It is not an unprimeable number, because it can be changed into a prime (3217663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6029 + ... + 6540.

Almost surely, 2^3217664 is an apocalyptic number.

It is an amenable number.

3217664 is a deficient number, since it is larger than the sum of its proper divisors (3205606).

3217664 is an equidigital number, since it uses as much as digits as its factorization.

3217664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12585 (or 12571 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 3217664 is about 1793.7848254459. The cubic root of 3217664 is about 147.6319072820.

The spelling of 3217664 in words is "three million, two hundred seventeen thousand, six hundred sixty-four".