40718681 has 8 divisors (see below), whose sum is σ = 41895360. Its totient is φ = 39557232.

The previous prime is 40718677. The next prime is 40718683. The reversal of 40718681 is 18681704.

40718681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40718681 - 2² = 40718677 is a prime.

It is a super-2 number, since 2×40718681² = 3316021964759522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40718683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (5236920).

Almost surely, 2^40718681 is an apocalyptic number.

It is an amenable number.

40718681 is a deficient number, since it is larger than the sum of its proper divisors (1176679).

40718681 is a wasteful number, since it uses less digits than its factorization.

40718681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 40718681 is about 6381.1191024772. The cubic root of 40718681 is about 344.0312556106.

The spelling of 40718681 in words is "forty million, seven hundred eighteen thousand, six hundred eighty-one".