66081414 has 32 divisors (see below), whose sum is σ = 159929856. Its totient is φ = 17769600.

The previous prime is 66081409. The next prime is 66081419. The reversal of 66081414 is 41418066.

It is an interprime number because it is at equal distance from previous prime (66081409) and next prime (66081419).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66081419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45562 + ... + 46989.

It is an arithmetic number, because the mean of its divisors is an integer number (4997808).

Almost surely, 2^66081414 is an apocalyptic number.

66081414 is an abundant number, since it is smaller than the sum of its proper divisors (93848442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66081414 is a wasteful number, since it uses less digits than its factorization.

66081414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92580.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 66081414 is about 8129.0475456845. The cubic root of 66081414 is about 404.2901022255.

The spelling of 66081414 in words is "sixty-six million, eighty-one thousand, four hundred fourteen".