41686638 has 16 divisors (see below), whose sum is σ = 95283840. Its totient is φ = 11910456.

The previous prime is 41686633. The next prime is 41686657. The reversal of 41686638 is 83668614.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 992539 = 41686638 / (4 + 1 + 6 + 8 + 6 + 6 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 41686638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41686633) 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, 496228 + ... + 496311.

It is an arithmetic number, because the mean of its divisors is an integer number (5955240).

Almost surely, 2^41686638 is an apocalyptic number.

41686638 is an abundant number, since it is smaller than the sum of its proper divisors (53597202).

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

41686638 is a wasteful number, since it uses less digits than its factorization.

41686638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992551.

The product of its digits is 165888, while the sum is 42.

The square root of 41686638 is about 6456.5190311808. The cubic root of 41686638 is about 346.7360177246.

It can be divided in two parts, 41686 and 638, that added together give a palindrome (42324).

The spelling of 41686638 in words is "forty-one million, six hundred eighty-six thousand, six hundred thirty-eight".