2237997 has 4 divisors (see below), whose sum is σ = 2984000. Its totient is φ = 1491996.

The previous prime is 2237957. The next prime is 2238011. The reversal of 2237997 is 7997322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2237997 - 2⁶ = 2237933 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 2²¹ + 3⁹ + 7 + 9³ + 9³ + 7⁶ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2237927) 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, 372997 + ... + 373002.

It is an arithmetic number, because the mean of its divisors is an integer number (746000).

2^2237997 is an apocalyptic number.

It is an amenable number.

2237997 is a deficient number, since it is larger than the sum of its proper divisors (746003).

2237997 is an equidigital number, since it uses as much as digits as its factorization.

2237997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746002.

The product of its digits is 47628, while the sum is 39.

The square root of 2237997 is about 1495.9936497191. The cubic root of 2237997 is about 130.8036410998.

The spelling of 2237997 in words is "two million, two hundred thirty-seven thousand, nine hundred ninety-seven".