40620866 has 16 divisors (see below), whose sum is σ = 71584128. Its totient is φ = 17043600.

The previous prime is 40620863. The next prime is 40620869. The reversal of 40620866 is 66802604.

It is a happy number.

40620866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40620863) and next prime (40620869).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (40620863) 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, 70730 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (4474008).

Almost surely, 2^40620866 is an apocalyptic number.

40620866 is a deficient number, since it is larger than the sum of its proper divisors (30963262).

40620866 is a wasteful number, since it uses less digits than its factorization.

40620866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142057.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 40620866 is about 6373.4500860994. The cubic root of 40620866 is about 343.7555557890.

The spelling of 40620866 in words is "forty million, six hundred twenty thousand, eight hundred sixty-six".