4273681 has 4 divisors (see below), whose sum is σ = 4525092. Its totient is φ = 4022272.

The previous prime is 4273679. The next prime is 4273693. The reversal of 4273681 is 1863724.

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 2531281 + 1742400 = 1591^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 4273681 - 2¹ = 4273679 is a prime.

It is a super-2 number, since 2×4273681² = 36528698579522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4273601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125680 + ... + 125713.

It is an arithmetic number, because the mean of its divisors is an integer number (1131273).

Almost surely, 2^4273681 is an apocalyptic number.

It is an amenable number.

4273681 is a deficient number, since it is larger than the sum of its proper divisors (251411).

4273681 is a wasteful number, since it uses less digits than its factorization.

4273681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251410.

The product of its digits is 8064, while the sum is 31.

The square root of 4273681 is about 2067.2883204817. The cubic root of 4273681 is about 162.2808849541.

The spelling of 4273681 in words is "four million, two hundred seventy-three thousand, six hundred eighty-one".