4422645 has 24 divisors (see below), whose sum is σ = 7932600. Its totient is φ = 2276736.

The previous prime is 4422643. The next prime is 4422667. The reversal of 4422645 is 5462244.

It can be written as a sum of positive squares in 4 ways, for example, as 1580049 + 2842596 = 1257^2 + 1686^2 .

It is not a de Polignac number, because 4422645 - 2¹ = 4422643 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4422643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390 + ... + 2999.

It is an arithmetic number, because the mean of its divisors is an integer number (330525).

Almost surely, 2^4422645 is an apocalyptic number.

4422645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4422645 is a deficient number, since it is larger than the sum of its proper divisors (3509955).

4422645 is a wasteful number, since it uses less digits than its factorization.

4422645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429 (or 3426 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 4422645 is about 2103.0085591837. The cubic root of 4422645 is about 164.1448873281.

Adding to 4422645 its reverse (5462244), we get a palindrome (9884889).

The spelling of 4422645 in words is "four million, four hundred twenty-two thousand, six hundred forty-five".