66150961 has 8 divisors (see below), whose sum is σ = 70123104. Its totient is φ = 62187840.

The previous prime is 66150947. The next prime is 66151031. The reversal of 66150961 is 16905166.

66150961 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 66150961 - 2⁹ = 66150449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66150911) 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, 18246 + ... + 21568.

It is an arithmetic number, because the mean of its divisors is an integer number (8765388).

Almost surely, 2^66150961 is an apocalyptic number.

It is an amenable number.

66150961 is a deficient number, since it is larger than the sum of its proper divisors (3972143).

66150961 is a wasteful number, since it uses less digits than its factorization.

66150961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 66150961 is about 8133.3241051860. The cubic root of 66150961 is about 404.4318834208.

The spelling of 66150961 in words is "sixty-six million, one hundred fifty thousand, nine hundred sixty-one".