66088771 has 16 divisors (see below), whose sum is σ = 78316480. Its totient is φ = 54587520.

The previous prime is 66088753. The next prime is 66088777. The reversal of 66088771 is 17788066.

It is a cyclic number.

It is not a de Polignac number, because 66088771 - 2¹³ = 66080579 is a prime.

It is the 8130-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66088777) by changing a digit.

It is a nontrivial repunit in base 8129.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27061 + ... + 29401.

It is an arithmetic number, because the mean of its divisors is an integer number (4894780).

Almost surely, 2^66088771 is an apocalyptic number.

66088771 is a deficient number, since it is larger than the sum of its proper divisors (12227709).

66088771 is a wasteful number, since it uses less digits than its factorization.

66088771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 66088771 is about 8129.5000461283. The cubic root of 66088771 is about 404.3051051929.

The spelling of 66088771 in words is "sixty-six million, eighty-eight thousand, seven hundred seventy-one".