40663168 has 64 divisors (see below), whose sum is σ = 99731520. Its totient is φ = 16081920.

The previous prime is 40663159. The next prime is 40663177. The reversal of 40663168 is 86136604.

It is an interprime number because it is at equal distance from previous prime (40663159) and next prime (40663177).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9903 + ... + 13393.

It is an arithmetic number, because the mean of its divisors is an integer number (1558305).

Almost surely, 2^40663168 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 40663168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49865760).

40663168 is an abundant number, since it is smaller than the sum of its proper divisors (59068352).

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

40663168 is a wasteful number, since it uses less digits than its factorization.

40663168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 40663168 is about 6376.7678333149. The cubic root of 40663168 is about 343.8748417954.

The spelling of 40663168 in words is "forty million, six hundred sixty-three thousand, one hundred sixty-eight".