66334081 has 16 divisors (see below), whose sum is σ = 74692800. Its totient is φ = 58380480.

The previous prime is 66334067. The next prime is 66334091. The reversal of 66334081 is 18043366.

66334081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66334081 - 2¹⁷ = 66203009 is a prime.

It is a super-2 number, since 2×66334081² = 8800420604229122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66334091) 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 15 ways as a sum of consecutive naturals, for example, 141810 + ... + 142276.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 2^66334081 is an apocalyptic number.

It is an amenable number.

66334081 is a deficient number, since it is larger than the sum of its proper divisors (8358719).

66334081 is a wasteful number, since it uses less digits than its factorization.

66334081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66334081 is about 8144.5737150572. The cubic root of 66334081 is about 404.8047242317.

The spelling of 66334081 in words is "sixty-six million, three hundred thirty-four thousand, eighty-one".