3220685 has 8 divisors (see below), whose sum is σ = 4162200. Its totient is φ = 2378304.

The previous prime is 3220681. The next prime is 3220699. The reversal of 3220685 is 5860223.

It can be written as a sum of positive squares in 4 ways, for example, as 310249 + 2910436 = 557^2 + 1706^2 .

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 3220685 - 2² = 3220681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24710 + ... + 24839.

It is an arithmetic number, because the mean of its divisors is an integer number (520275).

Almost surely, 2^3220685 is an apocalyptic number.

It is an amenable number.

3220685 is a deficient number, since it is larger than the sum of its proper divisors (941515).

3220685 is a wasteful number, since it uses less digits than its factorization.

3220685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49567.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 3220685 is about 1794.6267021306. The cubic root of 3220685 is about 147.6780957058.

The spelling of 3220685 in words is "three million, two hundred twenty thousand, six hundred eighty-five".