2687478 has 16 divisors (see below), whose sum is σ = 5396160. Its totient is φ = 892296.

The previous prime is 2687473. The next prime is 2687491. The reversal of 2687478 is 8747862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687473) 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, 1113 + ... + 2571.

It is an arithmetic number, because the mean of its divisors is an integer number (337260).

2^2687478 is an apocalyptic number.

2687478 is an abundant number, since it is smaller than the sum of its proper divisors (2708682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2687478 is a wasteful number, since it uses less digits than its factorization.

2687478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771.

The product of its digits is 150528, while the sum is 42.

The square root of 2687478 is about 1639.3529211247. The cubic root of 2687478 is about 139.0320647866.

The spelling of 2687478 in words is "two million, six hundred eighty-seven thousand, four hundred seventy-eight".