3221670 has 32 divisors (see below), whose sum is σ = 8188128. Its totient is φ = 808448.

The previous prime is 3221641. The next prime is 3221677. The reversal of 3221670 is 761223.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (255879).

Almost surely, 2^3221670 is an apocalyptic number.

3221670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3221670 is an abundant number, since it is smaller than the sum of its proper divisors (4966458).

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

3221670 is a wasteful number, since it uses less digits than its factorization.

3221670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 3221670 is about 1794.9011114822. The cubic root of 3221670 is about 147.6931492423.

Adding to 3221670 its reverse (761223), we get a palindrome (3982893).

The spelling of 3221670 in words is "three million, two hundred twenty-one thousand, six hundred seventy".