66242636 has 12 divisors (see below), whose sum is σ = 116054400. Its totient is φ = 33084240.

The previous prime is 66242597. The next prime is 66242669. The reversal of 66242636 is 63624266.

66242636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66242596 and 66242605.

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, 5036 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (9671200).

Almost surely, 2^66242636 is an apocalyptic number.

It is an amenable number.

66242636 is a deficient number, since it is larger than the sum of its proper divisors (49811764).

66242636 is a wasteful number, since it uses less digits than its factorization.

66242636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18544 (or 18542 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 66242636 is about 8138.9579185544. The cubic root of 66242636 is about 404.6186238611.

The spelling of 66242636 in words is "sixty-six million, two hundred forty-two thousand, six hundred thirty-six".