2273639 has 4 divisors (see below), whose sum is σ = 2280840. Its totient is φ = 2266440.

The previous prime is 2273603. The next prime is 2273651. The reversal of 2273639 is 9363722.

It is a happy number.

2273639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2273639 - 2¹⁶ = 2208103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104 + ... + 3765.

It is an arithmetic number, because the mean of its divisors is an integer number (570210).

2^2273639 is an apocalyptic number.

2273639 is a deficient number, since it is larger than the sum of its proper divisors (7201).

2273639 is an equidigital number, since it uses as much as digits as its factorization.

2273639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200.

The product of its digits is 13608, while the sum is 32.

The square root of 2273639 is about 1507.8590782961. The cubic root of 2273639 is about 131.4943734430.

The spelling of 2273639 in words is "two million, two hundred seventy-three thousand, six hundred thirty-nine".