2287618 has 4 divisors (see below), whose sum is σ = 3431430. Its totient is φ = 1143808.

The previous prime is 2287613. The next prime is 2287627. The reversal of 2287618 is 8167822.

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., 1750329 + 537289 = 1323^2 + 733^2 .

It is a super-2 number, since 2×2287618² = 10466392227848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2287613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571903 + ... + 571906.

2^2287618 is an apocalyptic number.

2287618 is a deficient number, since it is larger than the sum of its proper divisors (1143812).

2287618 is a wasteful number, since it uses less digits than its factorization.

2287618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143811.

The product of its digits is 10752, while the sum is 34.

The square root of 2287618 is about 1512.4873553190. The cubic root of 2287618 is about 131.7633116927.

The spelling of 2287618 in words is "two million, two hundred eighty-seven thousand, six hundred eighteen".