66341961 has 24 divisors (see below), whose sum is σ = 110497920. Its totient is φ = 37570176.

The previous prime is 66341929. The next prime is 66341969. The reversal of 66341961 is 16914366.

66341961 is a `hidden beast` number, since 6 + 634 + 19 + 6 + 1 = 666.

66341961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66341961 - 2⁵ = 66341929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66341969) 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 23 ways as a sum of consecutive naturals, for example, 2460 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (4604080).

Almost surely, 2^66341961 is an apocalyptic number.

It is an amenable number.

66341961 is a deficient number, since it is larger than the sum of its proper divisors (44155959).

66341961 is a wasteful number, since it uses less digits than its factorization.

66341961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9445 (or 9442 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 66341961 is about 8145.0574583609. The cubic root of 66341961 is about 404.8207528697.

It can be divided in two parts, 663 and 41961, that added together give a palindrome (42624).

The spelling of 66341961 in words is "sixty-six million, three hundred forty-one thousand, nine hundred sixty-one".