4273645 has 4 divisors (see below), whose sum is σ = 5128380. Its totient is φ = 3418912.

The previous prime is 4273631. The next prime is 4273667. The reversal of 4273645 is 5463724.

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 1471369 + 2802276 = 1213^2 + 1674^2 .

It is a cyclic number.

It is not a de Polignac number, because 4273645 - 2¹⁷ = 4142573 is a prime.

It is a super-3 number, since 3×4273645³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 4⁴ + 2³ + 7 + 3⁶ + 6³ + 4¹¹ + 5⁷ .

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, 427360 + ... + 427369.

It is an arithmetic number, because the mean of its divisors is an integer number (1282095).

Almost surely, 2^4273645 is an apocalyptic number.

It is an amenable number.

4273645 is a deficient number, since it is larger than the sum of its proper divisors (854735).

4273645 is an equidigital number, since it uses as much as digits as its factorization.

4273645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854734.

The product of its digits is 20160, while the sum is 31.

The square root of 4273645 is about 2067.2796134050. The cubic root of 4273645 is about 162.2804292870.

The spelling of 4273645 in words is "four million, two hundred seventy-three thousand, six hundred forty-five".