2237985 has 24 divisors (see below), whose sum is σ = 3977064. Its totient is φ = 1163520.

The previous prime is 2237957. The next prime is 2238011. The reversal of 2237985 is 5897322.

2237985 = 123² + 124² + ... + 204².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 138384 + 2099601 = 372^2 + 1449^2 .

It is not a de Polignac number, because 2237985 - 2¹³ = 2229793 is a prime.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 1239 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (165711).

2^2237985 is an apocalyptic number.

It is an amenable number.

2237985 is a deficient number, since it is larger than the sum of its proper divisors (1739079).

2237985 is a wasteful number, since it uses less digits than its factorization.

2237985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2237985 is about 1495.9896390016. The cubic root of 2237985 is about 130.8034073124.

The spelling of 2237985 in words is "two million, two hundred thirty-seven thousand, nine hundred eighty-five".