2667281 has 4 divisors (see below), whose sum is σ = 2670564. Its totient is φ = 2664000.

The previous prime is 2667263. The next prime is 2667289. The reversal of 2667281 is 1827662.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 707281 + 1960000 = 841^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2667281 - 2¹⁴ = 2650897 is a prime.

It is a super-2 number, since 2×2667281² = 14228775865922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2667289) 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, 581 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (667641).

2^2667281 is an apocalyptic number.

It is an amenable number.

2667281 is a deficient number, since it is larger than the sum of its proper divisors (3283).

2667281 is a wasteful number, since it uses less digits than its factorization.

2667281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282.

The product of its digits is 8064, while the sum is 32.

The square root of 2667281 is about 1633.1812514231. The cubic root of 2667281 is about 138.6829029261.

The spelling of 2667281 in words is "two million, six hundred sixty-seven thousand, two hundred eighty-one".