3221029685 has 16 divisors (see below), whose sum is σ = 3946930416. Its totient is φ = 2522577408.

The previous prime is 3221029649. The next prime is 3221029723. The reversal of 3221029685 is 5869201223.

It can be written as a sum of positive squares in 8 ways, for example, as 688222756 + 2532806929 = 26234^2 + 50327^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221029685 - 2¹⁸ = 3220767541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107807 + ... + 134403.

It is an arithmetic number, because the mean of its divisors is an integer number (246683151).

Almost surely, 2^3221029685 is an apocalyptic number.

It is an amenable number.

3221029685 is a deficient number, since it is larger than the sum of its proper divisors (725900731).

3221029685 is a wasteful number, since it uses less digits than its factorization.

3221029685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27112.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 3221029685 is about 56754.1160181356. The cubic root of 3221029685 is about 1476.8336379929.

The spelling of 3221029685 in words is "three billion, two hundred twenty-one million, twenty-nine thousand, six hundred eighty-five".