4381687 has 4 divisors (see below), whose sum is σ = 4396000. Its totient is φ = 4367376.

The previous prime is 4381681. The next prime is 4381693. The reversal of 4381687 is 7861834.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (4381681) and next prime (4381693).

It is a cyclic number.

It is not a de Polignac number, because 4381687 - 2¹⁵ = 4348919 is a prime.

It is a Duffinian number.

4381687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381681) 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, 6687 + ... + 7312.

It is an arithmetic number, because the mean of its divisors is an integer number (1099000).

Almost surely, 2^4381687 is an apocalyptic number.

4381687 is a deficient number, since it is larger than the sum of its proper divisors (14313).

4381687 is a wasteful number, since it uses less digits than its factorization.

4381687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14312.

The product of its digits is 32256, while the sum is 37.

The square root of 4381687 is about 2093.2479547345. The cubic root of 4381687 is about 163.6366011688.

The spelling of 4381687 in words is "four million, three hundred eighty-one thousand, six hundred eighty-seven".