4022605 has 4 divisors (see below), whose sum is σ = 4827132. Its totient is φ = 3218080.

The previous prime is 4022593. The next prime is 4022611. The reversal of 4022605 is 5062204.

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 1814409 + 2208196 = 1347^2 + 1486^2 .

It is not a de Polignac number, because 4022605 - 2⁷ = 4022477 is a prime.

It is a Duffinian number.

4022605 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402256 + ... + 402265.

It is an arithmetic number, because the mean of its divisors is an integer number (1206783).

Almost surely, 2^4022605 is an apocalyptic number.

It is an amenable number.

4022605 is a deficient number, since it is larger than the sum of its proper divisors (804527).

4022605 is an equidigital number, since it uses as much as digits as its factorization.

4022605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804526.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4022605 is about 2005.6432883242. The cubic root of 4022605 is about 159.0385703404.

Adding to 4022605 its reverse (5062204), we get a palindrome (9084809).

The spelling of 4022605 in words is "four million, twenty-two thousand, six hundred five".