40068697 has 2 divisors, whose sum is σ = 40068698. Its totient is φ = 40068696.

The previous prime is 40068671. The next prime is 40068713. The reversal of 40068697 is 79686004.

40068697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 5740816 = 5859^2 + 2396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40068697 is a prime.

It is not a weakly prime, because it can be changed into another prime (40068617) 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 as a sum of consecutive naturals, namely, 20034348 + 20034349.

It is an arithmetic number, because the mean of its divisors is an integer number (20034349).

Almost surely, 2^40068697 is an apocalyptic number.

It is an amenable number.

40068697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40068697 is an equidigital number, since it uses as much as digits as its factorization.

40068697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 40068697 is about 6329.9839652246. The cubic root of 40068697 is about 342.1908610569.

The spelling of 40068697 in words is "forty million, sixty-eight thousand, six hundred ninety-seven".