40068757 has 4 divisors (see below), whose sum is σ = 40083340. Its totient is φ = 40054176.

The previous prime is 40068713. The next prime is 40068773. The reversal of 40068757 is 75786004.

It is a happy number.

40068757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5564881 + 34503876 = 2359^2 + 5874^2 .

It is a cyclic number.

It is not a de Polignac number, because 40068757 - 2¹⁹ = 39544469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40068797) 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 3 ways as a sum of consecutive naturals, for example, 1782 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (10020835).

Almost surely, 2^40068757 is an apocalyptic number.

It is an amenable number.

40068757 is a deficient number, since it is larger than the sum of its proper divisors (14583).

40068757 is a wasteful number, since it uses less digits than its factorization.

40068757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14582.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 40068757 is about 6329.9887045713. The cubic root of 40068757 is about 342.1910318589.

The spelling of 40068757 in words is "forty million, sixty-eight thousand, seven hundred fifty-seven".