66485788 has 12 divisors (see below), whose sum is σ = 122473960. Its totient is φ = 31493232.

The previous prime is 66485773. The next prime is 66485789. The reversal of 66485788 is 88758466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66485789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437331 + ... + 437482.

Almost surely, 2^66485788 is an apocalyptic number.

It is an amenable number.

66485788 is a deficient number, since it is larger than the sum of its proper divisors (55988172).

66485788 is a wasteful number, since it uses less digits than its factorization.

66485788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874836 (or 874834 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The square root of 66485788 is about 8153.8817749585. The cubic root of 66485788 is about 405.1130873550.

The spelling of 66485788 in words is "sixty-six million, four hundred eighty-five thousand, seven hundred eighty-eight".