2647489 has 4 divisors (see below), whose sum is σ = 2851156. Its totient is φ = 2443824.

The previous prime is 2647481. The next prime is 2647499. The reversal of 2647489 is 9847462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 1166400 = 1217^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2647489 - 2³ = 2647481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2647481) 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, 101814 + ... + 101839.

It is an arithmetic number, because the mean of its divisors is an integer number (712789).

2^2647489 is an apocalyptic number.

It is an amenable number.

2647489 is a deficient number, since it is larger than the sum of its proper divisors (203667).

2647489 is a wasteful number, since it uses less digits than its factorization.

2647489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203666.

The product of its digits is 96768, while the sum is 40.

The square root of 2647489 is about 1627.1106293058. The cubic root of 2647489 is about 138.3390284909.

It can be divided in two parts, 2647 and 489, that added together give a square (3136 = 56²).

The spelling of 2647489 in words is "two million, six hundred forty-seven thousand, four hundred eighty-nine".