2440687 has 4 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 2418976.

The previous prime is 2440681. The next prime is 2440693. The reversal of 2440687 is 7860442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7860442 = 2 ⋅3930221.

It is an interprime number because it is at equal distance from previous prime (2440681) and next prime (2440693).

It is a cyclic number.

It is not a de Polignac number, because 2440687 - 2³ = 2440679 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2440687 is a lucky number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440681) 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, 10687 + ... + 10912.

It is an arithmetic number, because the mean of its divisors is an integer number (615600).

2^2440687 is an apocalyptic number.

2440687 is a deficient number, since it is larger than the sum of its proper divisors (21713).

2440687 is a wasteful number, since it uses less digits than its factorization.

2440687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21712.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 2440687 is about 1562.2698230459. The cubic root of 2440687 is about 134.6389437699.

It can be divided in two parts, 244068 and 7, that multiplied together give a triangular number (1708476 = T₁₈₄₈).

The spelling of 2440687 in words is "two million, four hundred forty thousand, six hundred eighty-seven".