2687139 has 48 divisors (see below), whose sum is σ = 5084352. Its totient is φ = 1327104.

The previous prime is 2687129. The next prime is 2687141. The reversal of 2687139 is 9317862.

It is not a de Polignac number, because 2687139 - 2⁴ = 2687123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2687129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13827 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (105924).

2^2687139 is an apocalyptic number.

2687139 is a deficient number, since it is larger than the sum of its proper divisors (2397213).

2687139 is a wasteful number, since it uses less digits than its factorization.

2687139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 233 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2687139 is about 1639.2495234100. The cubic root of 2687139 is about 139.0262186796.

The spelling of 2687139 in words is "two million, six hundred eighty-seven thousand, one hundred thirty-nine".