2587997 has 2 divisors, whose sum is σ = 2587998. Its totient is φ = 2587996.

The previous prime is 2587993. The next prime is 2588051. The reversal of 2587997 is 7997852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2343961 + 244036 = 1531^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2587997 - 2² = 2587993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2587993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293998 + 1293999.

It is an arithmetic number, because the mean of its divisors is an integer number (1293999).

2^2587997 is an apocalyptic number.

It is an amenable number.

2587997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587997 is an equidigital number, since it uses as much as digits as its factorization.

2587997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 47.

The square root of 2587997 is about 1608.7252717602. The cubic root of 2587997 is about 137.2949583031.

The spelling of 2587997 in words is "two million, five hundred eighty-seven thousand, nine hundred ninety-seven".