40663868 has 12 divisors (see below), whose sum is σ = 81327792. Its totient is φ = 17427360.

The previous prime is 40663849. The next prime is 40663871. The reversal of 40663868 is 86836604.

40663868 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726113 + ... + 726168.

It is an arithmetic number, because the mean of its divisors is an integer number (6777316).

Almost surely, 2^40663868 is an apocalyptic number.

It is an amenable number.

40663868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40663868 is a wasteful number, since it uses less digits than its factorization.

40663868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452292 (or 1452290 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 40663868 is about 6376.8227198190. The cubic root of 40663868 is about 343.8768150063.

The spelling of 40663868 in words is "forty million, six hundred sixty-three thousand, eight hundred sixty-eight".