2686489 has 8 divisors (see below), whose sum is σ = 2910600. Its totient is φ = 2464896.

The previous prime is 2686487. The next prime is 2686513. The reversal of 2686489 is 9846862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1265625 + 1420864 = 1125^2 + 1192^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2686489 - 2¹ = 2686487 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁶ + 8 + 6⁷ + 4⁹ + 8³ + 9² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2686483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037 + ... + 3085.

It is an arithmetic number, because the mean of its divisors is an integer number (363825).

2^2686489 is an apocalyptic number.

It is an amenable number.

2686489 is a deficient number, since it is larger than the sum of its proper divisors (224111).

2686489 is a wasteful number, since it uses less digits than its factorization.

2686489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its digits is 165888, while the sum is 43.

The square root of 2686489 is about 1639.0512499614. The cubic root of 2686489 is about 139.0150079546.

The spelling of 2686489 in words is "two million, six hundred eighty-six thousand, four hundred eighty-nine".