41640660 has 72 divisors (see below), whose sum is σ = 128080680. Its totient is φ = 10948608.

The previous prime is 41640631. The next prime is 41640691. The reversal of 41640660 is 6604614.

It can be written as a sum of positive squares in 4 ways, for example, as 10771524 + 30869136 = 3282^2 + 5556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11556 + ... + 14724.

Almost surely, 2^41640660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41640660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64040340).

41640660 is an abundant number, since it is smaller than the sum of its proper divisors (86440020).

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

41640660 is a wasteful number, since it uses less digits than its factorization.

41640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257 (or 3252 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 41640660 is about 6452.9574615055. The cubic root of 41640660 is about 346.6084941015.

The spelling of 41640660 in words is "forty-one million, six hundred forty thousand, six hundred sixty".