4259645 has 18 divisors (see below), whose sum is σ = 5614074. Its totient is φ = 3101280.

The previous prime is 4259641. The next prime is 4259653. The reversal of 4259645 is 5469524.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 20164 + 4239481 = 142^2 + 2059^2 .

It is not a de Polignac number, because 4259645 - 2² = 4259641 is a prime.

It is a d-powerful number, because it can be written as 4 + 2⁵ + 5⁵ + 9⁵ + 6 + 4¹¹ + 5⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4259641) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 59960 + ... + 60030.

It is an arithmetic number, because the mean of its divisors is an integer number (311893).

Almost surely, 2^4259645 is an apocalyptic number.

It is an amenable number.

4259645 is a deficient number, since it is larger than the sum of its proper divisors (1354429).

4259645 is an equidigital number, since it uses as much as digits as its factorization.

4259645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 89 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 4259645 is about 2063.8907432323. The cubic root of 4259645 is about 162.1030310398.

The spelling of 4259645 in words is "four million, two hundred fifty-nine thousand, six hundred forty-five".