3220651 has 8 divisors (see below), whose sum is σ = 3750624. Its totient is φ = 2708160.

The previous prime is 3220639. The next prime is 3220661. The reversal of 3220651 is 1560223.

It is a happy number.

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

It is not a de Polignac number, because 3220651 - 2⁵ = 3220619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220601) 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, 3970 + ... + 4711.

It is an arithmetic number, because the mean of its divisors is an integer number (468828).

Almost surely, 2^3220651 is an apocalyptic number.

3220651 is a deficient number, since it is larger than the sum of its proper divisors (529973).

3220651 is an equidigital number, since it uses as much as digits as its factorization.

3220651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3220651 is about 1794.6172293835. The cubic root of 3220651 is about 147.6775760366.

Adding to 3220651 its reverse (1560223), we get a palindrome (4780874).

The spelling of 3220651 in words is "three million, two hundred twenty thousand, six hundred fifty-one".