2237566 has 4 divisors (see below), whose sum is σ = 3356352. Its totient is φ = 1118782.

The previous prime is 2237563. The next prime is 2237567. The reversal of 2237566 is 6657322.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2237561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559390 + ... + 559393.

It is an arithmetic number, because the mean of its divisors is an integer number (839088).

2^2237566 is an apocalyptic number.

2237566 is a deficient number, since it is larger than the sum of its proper divisors (1118786).

2237566 is a wasteful number, since it uses less digits than its factorization.

2237566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118785.

The product of its digits is 15120, while the sum is 31.

The square root of 2237566 is about 1495.8495913694. The cubic root of 2237566 is about 130.7952437116.

The spelling of 2237566 in words is "two million, two hundred thirty-seven thousand, five hundred sixty-six".