2273618 has 4 divisors (see below), whose sum is σ = 3410430. Its totient is φ = 1136808.

The previous prime is 2273603. The next prime is 2273651. The reversal of 2273618 is 8163722.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 162409 = 1453^2 + 403^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568403 + ... + 568406.

2^2273618 is an apocalyptic number.

2273618 is a deficient number, since it is larger than the sum of its proper divisors (1136812).

2273618 is a wasteful number, since it uses less digits than its factorization.

2273618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136811.

The product of its digits is 4032, while the sum is 29.

The square root of 2273618 is about 1507.8521147646. The cubic root of 2273618 is about 131.4939686015.

The spelling of 2273618 in words is "two million, two hundred seventy-three thousand, six hundred eighteen".