4221606345 has 64 divisors (see below), whose sum is σ = 7901245440. Its totient is φ = 1901952000.

The previous prime is 4221606329. The next prime is 4221606349. The reversal of 4221606345 is 5436061224.

4221606345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4221606345 - 2⁴ = 4221606329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (4221606349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212070 + ... + 231120.

It is an arithmetic number, because the mean of its divisors is an integer number (123456960).

Almost surely, 2^4221606345 is an apocalyptic number.

It is an amenable number.

4221606345 is a deficient number, since it is larger than the sum of its proper divisors (3679639095).

4221606345 is a wasteful number, since it uses less digits than its factorization.

4221606345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19166.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 4221606345 is about 64973.8897173318. The cubic root of 4221606345 is about 1616.1906054021.

Adding to 4221606345 its reverse (5436061224), we get a palindrome (9657667569).

The spelling of 4221606345 in words is "four billion, two hundred twenty-one million, six hundred six thousand, three hundred forty-five".