8146638 has 48 divisors (see below), whose sum is σ = 18982080. Its totient is φ = 2515968.

The previous prime is 8146637. The next prime is 8146639. The reversal of 8146638 is 8366418.

It is a happy number.

8146638 is a `hidden beast` number, since 8 + 14 + 6 + 638 = 666.

It is an interprime number because it is at equal distance from previous prime (8146637) and next prime (8146639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8146631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24006 + ... + 24342.

It is an arithmetic number, because the mean of its divisors is an integer number (395460).

Almost surely, 2^8146638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8146638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9491040).

8146638 is an abundant number, since it is smaller than the sum of its proper divisors (10835442).

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

8146638 is a wasteful number, since it uses less digits than its factorization.

8146638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 438 counting only the distinct ones).

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

The square root of 8146638 is about 2854.2315953685. The cubic root of 8146638 is about 201.2145922302.

The spelling of 8146638 in words is "eight million, one hundred forty-six thousand, six hundred thirty-eight".