4381686 has 24 divisors (see below), whose sum is σ = 9544080. Its totient is φ = 1452816.

The previous prime is 4381681. The next prime is 4381693. The reversal of 4381686 is 6861834.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4381686.

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 11 ways as a sum of consecutive naturals, for example, 3591 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (397670).

Almost surely, 2^4381686 is an apocalyptic number.

4381686 is an abundant number, since it is smaller than the sum of its proper divisors (5162394).

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

4381686 is a wasteful number, since it uses less digits than its factorization.

4381686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1297 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4381686 is about 2093.2477158712. The cubic root of 4381686 is about 163.6365887202.

The spelling of 4381686 in words is "four million, three hundred eighty-one thousand, six hundred eighty-six".