2387997 has 6 divisors (see below), whose sum is σ = 3449342. Its totient is φ = 1591992.

The previous prime is 2387971. The next prime is 2388013. The reversal of 2387997 is 7997832.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 962361 = 1194^2 + 981^2 .

It is not a de Polignac number, because 2387997 - 2¹⁵ = 2355229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132658 + ... + 132675.

2^2387997 is an apocalyptic number.

It is an amenable number.

2387997 is a deficient number, since it is larger than the sum of its proper divisors (1061345).

2387997 is a wasteful number, since it uses less digits than its factorization.

2387997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265339 (or 265336 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 2387997 is about 1545.3145310907. The cubic root of 2387997 is about 133.6630167832.

The spelling of 2387997 in words is "two million, three hundred eighty-seven thousand, nine hundred ninety-seven".