2487643 has 8 divisors (see below), whose sum is σ = 2555712. Its totient is φ = 2420616.

The previous prime is 2487637. The next prime is 2487659. The reversal of 2487643 is 3467842.

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 2487643 - 2²¹ = 390491 is a prime.

It is a Duffinian number.

2487643 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2487599 and 2487608.

It is not an unprimeable number, because it can be changed into a prime (2487623) 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, 6996 + ... + 7342.

It is an arithmetic number, because the mean of its divisors is an integer number (319464).

2^2487643 is an apocalyptic number.

2487643 is a deficient number, since it is larger than the sum of its proper divisors (68069).

2487643 is a wasteful number, since it uses less digits than its factorization.

2487643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its digits is 32256, while the sum is 34.

The square root of 2487643 is about 1577.2263629549. The cubic root of 2487643 is about 135.4968976655.

The spelling of 2487643 in words is "two million, four hundred eighty-seven thousand, six hundred forty-three".