66650744 has 32 divisors (see below), whose sum is σ = 136598400. Its totient is φ = 30351360.

The previous prime is 66650723. The next prime is 66650783. The reversal of 66650744 is 44705666.

66650744 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 = 66650698 and 66650707.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3689 + ... + 12120.

It is an arithmetic number, because the mean of its divisors is an integer number (4268700).

Almost surely, 2^66650744 is an apocalyptic number.

It is an amenable number.

66650744 is an abundant number, since it is smaller than the sum of its proper divisors (69947656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66650744 is a wasteful number, since it uses less digits than its factorization.

66650744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15863 (or 15859 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 66650744 is about 8163.9906908325. The cubic root of 66650744 is about 405.4478488428.

The spelling of 66650744 in words is "sixty-six million, six hundred fifty thousand, seven hundred forty-four".