66232649 has 8 divisors (see below), whose sum is σ = 76824768. Its totient is φ = 55923120.

The previous prime is 66232631. The next prime is 66232693. The reversal of 66232649 is 94623266.

66232649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66232649 - 2⁸ = 66232393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66232619) 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, 70142 + ... + 71079.

It is an arithmetic number, because the mean of its divisors is an integer number (9603096).

Almost surely, 2^66232649 is an apocalyptic number.

It is an amenable number.

66232649 is a deficient number, since it is larger than the sum of its proper divisors (10592119).

66232649 is a wasteful number, since it uses less digits than its factorization.

66232649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141295.

The product of its digits is 93312, while the sum is 38.

The square root of 66232649 is about 8138.3443647956. The cubic root of 66232649 is about 404.5982888748.

The spelling of 66232649 in words is "sixty-six million, two hundred thirty-two thousand, six hundred forty-nine".