3216985 has 8 divisors (see below), whose sum is σ = 4063680. Its totient is φ = 2438064.

The previous prime is 3216979. The next prime is 3216991. The reversal of 3216985 is 5896123.

It is an interprime number because it is at equal distance from previous prime (3216979) and next prime (3216991).

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

It is a cyclic number.

It is not a de Polignac number, because 3216985 - 2³ = 3216977 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3216985.

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, 16837 + ... + 17026.

It is an arithmetic number, because the mean of its divisors is an integer number (507960).

Almost surely, 2^3216985 is an apocalyptic number.

It is an amenable number.

3216985 is a deficient number, since it is larger than the sum of its proper divisors (846695).

3216985 is a wasteful number, since it uses less digits than its factorization.

3216985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33887.

The product of its digits is 12960, while the sum is 34.

The square root of 3216985 is about 1793.5955508419. The cubic root of 3216985 is about 147.6215219925.

The spelling of 3216985 in words is "three million, two hundred sixteen thousand, nine hundred eighty-five".