66465836 has 12 divisors (see below), whose sum is σ = 116662728. Its totient is φ = 33133632.

The previous prime is 66465811. The next prime is 66465851. The reversal of 66465836 is 63856466.

66465836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 23306 + ... + 26001.

It is an arithmetic number, because the mean of its divisors is an integer number (9721894).

Almost surely, 2^66465836 is an apocalyptic number.

It is an amenable number.

66465836 is a deficient number, since it is larger than the sum of its proper divisors (50196892).

66465836 is a wasteful number, since it uses less digits than its factorization.

66465836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49648 (or 49646 counting only the distinct ones).

The product of its digits is 622080, while the sum is 44.

The square root of 66465836 is about 8152.6582168027. The cubic root of 66465836 is about 405.0725592701.

The spelling of 66465836 in words is "sixty-six million, four hundred sixty-five thousand, eight hundred thirty-six".