2687489 has 8 divisors (see below), whose sum is σ = 3082560. Its totient is φ = 2295216.

The previous prime is 2687473. The next prime is 2687491. The reversal of 2687489 is 9847862.

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

It is not a de Polignac number, because 2687489 - 2⁴ = 2687473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2683489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (385320).

2^2687489 is an apocalyptic number.

It is an amenable number.

2687489 is a deficient number, since it is larger than the sum of its proper divisors (395071).

2687489 is a wasteful number, since it uses less digits than its factorization.

2687489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

The product of its digits is 193536, while the sum is 44.

The square root of 2687489 is about 1639.3562761035. The cubic root of 2687489 is about 139.0322544751.

The spelling of 2687489 in words is "two million, six hundred eighty-seven thousand, four hundred eighty-nine".