3281664 has 36 divisors (see below), whose sum is σ = 8736056. Its totient is φ = 1093632.

The previous prime is 3281657. The next prime is 3281687. The reversal of 3281664 is 4661823.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369 + ... + 2904.

Almost surely, 2^3281664 is an apocalyptic number.

It is an amenable number.

3281664 is an abundant number, since it is smaller than the sum of its proper divisors (5454392).

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

3281664 is an equidigital number, since it uses as much as digits as its factorization.

3281664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 4278 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 3281664 is about 1811.5363645260. The cubic root of 3281664 is about 148.6042981656.

The spelling of 3281664 in words is "three million, two hundred eighty-one thousand, six hundred sixty-four".