3220460645 has 4 divisors (see below), whose sum is σ = 3864552780. Its totient is φ = 2576368512.

The previous prime is 3220460623. The next prime is 3220460647. The reversal of 3220460645 is 5460640223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2296422241 + 924038404 = 47921^2 + 30398^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220460645 - 2¹⁰ = 3220459621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220460647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322046060 + ... + 322046069.

It is an arithmetic number, because the mean of its divisors is an integer number (966138195).

Almost surely, 2^3220460645 is an apocalyptic number.

It is an amenable number.

3220460645 is a deficient number, since it is larger than the sum of its proper divisors (644092135).

3220460645 is an equidigital number, since it uses as much as digits as its factorization.

3220460645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644092134.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 3220460645 is about 56749.1025920234. The cubic root of 3220460645 is about 1476.7466650899.

The spelling of 3220460645 in words is "three billion, two hundred twenty million, four hundred sixty thousand, six hundred forty-five".