66160261 has 8 divisors (see below), whose sum is σ = 69734880. Its totient is φ = 62594928.

The previous prime is 66160253. The next prime is 66160267. The reversal of 66160261 is 16206166.

66160261 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 66160261 - 2³ = 66160253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160267) 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, 16155 + ... + 19831.

It is an arithmetic number, because the mean of its divisors is an integer number (8716860).

Almost surely, 2^66160261 is an apocalyptic number.

It is an amenable number.

66160261 is a deficient number, since it is larger than the sum of its proper divisors (3574619).

66160261 is a wasteful number, since it uses less digits than its factorization.

66160261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 66160261 is about 8133.8958070533. The cubic root of 66160261 is about 404.4508352254.

The spelling of 66160261 in words is "sixty-six million, one hundred sixty thousand, two hundred sixty-one".