2270749 has 4 divisors (see below), whose sum is σ = 2445436. Its totient is φ = 2096064.

The previous prime is 2270717. The next prime is 2270759. The reversal of 2270749 is 9470722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9470722 = 2 ⋅4735361.

It can be written as a sum of positive squares in 2 ways, for example, as 1428025 + 842724 = 1195^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 2270749 - 2⁵ = 2270717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2270749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2270759) 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, 87324 + ... + 87349.

It is an arithmetic number, because the mean of its divisors is an integer number (611359).

2^2270749 is an apocalyptic number.

It is an amenable number.

2270749 is a deficient number, since it is larger than the sum of its proper divisors (174687).

2270749 is a wasteful number, since it uses less digits than its factorization.

2270749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174686.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2270749 is about 1506.9004612117. The cubic root of 2270749 is about 131.4386360890.

The spelling of 2270749 in words is "two million, two hundred seventy thousand, seven hundred forty-nine".