2272643 has 4 divisors (see below), whose sum is σ = 2351040. Its totient is φ = 2194248.

The previous prime is 2272631. The next prime is 2272649. The reversal of 2272643 is 3462722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3462722 = 2 ⋅1731361.

It is a cyclic number.

It is not a de Polignac number, because 2272643 - 2¹² = 2268547 is a prime.

It is a super-4 number, since 4×2272643⁴ (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2272649) 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, 39155 + ... + 39212.

It is an arithmetic number, because the mean of its divisors is an integer number (587760).

2^2272643 is an apocalyptic number.

2272643 is a deficient number, since it is larger than the sum of its proper divisors (78397).

2272643 is an equidigital number, since it uses as much as digits as its factorization.

2272643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78396.

The product of its digits is 4032, while the sum is 26.

The square root of 2272643 is about 1507.5287725281. The cubic root of 2272643 is about 131.4751696432.

The spelling of 2272643 in words is "two million, two hundred seventy-two thousand, six hundred forty-three".