66681114 has 32 divisors (see below), whose sum is σ = 135768960. Its totient is φ = 21829632.

The previous prime is 66681107. The next prime is 66681133. The reversal of 66681114 is 41118666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102739 + ... + 103385.

It is an arithmetic number, because the mean of its divisors is an integer number (4242780).

Almost surely, 2^66681114 is an apocalyptic number.

66681114 is an abundant number, since it is smaller than the sum of its proper divisors (69087846).

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

66681114 is a wasteful number, since it uses less digits than its factorization.

66681114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its digits is 6912, while the sum is 33.

The square root of 66681114 is about 8165.8504762211. The cubic root of 66681114 is about 405.5094214558.

It can be divided in two parts, 66681 and 114, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 66681114 in words is "sixty-six million, six hundred eighty-one thousand, one hundred fourteen".