2587994 has 8 divisors (see below), whose sum is σ = 3888948. Its totient is φ = 1291680.

The previous prime is 2587993. The next prime is 2587997. The reversal of 2587994 is 4997852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2362369 + 225625 = 1537^2 + 475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2587993) 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, 1184 + ... + 2564.

2^2587994 is an apocalyptic number.

2587994 is a deficient number, since it is larger than the sum of its proper divisors (1300954).

2587994 is a wasteful number, since it uses less digits than its factorization.

2587994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its digits is 181440, while the sum is 44.

The square root of 2587994 is about 1608.7243393447. The cubic root of 2587994 is about 137.2949052524.

The spelling of 2587994 in words is "two million, five hundred eighty-seven thousand, nine hundred ninety-four".