66629912 has 32 divisors (see below), whose sum is σ = 129790080. Its totient is φ = 32033280.

The previous prime is 66629911. The next prime is 66629917. The reversal of 66629912 is 21992666.

66629912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66629912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66629911) 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, 42128 + ... + 43680.

It is an arithmetic number, because the mean of its divisors is an integer number (4055940).

Almost surely, 2^66629912 is an apocalyptic number.

66629912 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66629912 is a deficient number, since it is larger than the sum of its proper divisors (63160168).

66629912 is a wasteful number, since it uses less digits than its factorization.

66629912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1759 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 66629912 is about 8162.7147444952. The cubic root of 66629912 is about 405.4056029042.

The spelling of 66629912 in words is "sixty-six million, six hundred twenty-nine thousand, nine hundred twelve".