2266729 has 4 divisors (see below), whose sum is σ = 2400084. Its totient is φ = 2133376.

The previous prime is 2266717. The next prime is 2266739. The reversal of 2266729 is 9276622.

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 2036329 + 230400 = 1427^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266729 - 2⁵ = 2266697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2266694 and 2266703.

It is not an unprimeable number, because it can be changed into a prime (2266709) 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, 66652 + ... + 66685.

It is an arithmetic number, because the mean of its divisors is an integer number (600021).

2^2266729 is an apocalyptic number.

It is an amenable number.

2266729 is a deficient number, since it is larger than the sum of its proper divisors (133355).

2266729 is a wasteful number, since it uses less digits than its factorization.

2266729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133354.

The product of its digits is 18144, while the sum is 34.

The square root of 2266729 is about 1505.5660065238. The cubic root of 2266729 is about 131.3610265381.

The spelling of 2266729 in words is "two million, two hundred sixty-six thousand, seven hundred twenty-nine".