66166914 has 24 divisors (see below), whose sum is σ = 145459440. Its totient is φ = 20050360.

The previous prime is 66166897. The next prime is 66166943. The reversal of 66166914 is 41966166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44844 + ... + 46295.

It is an arithmetic number, because the mean of its divisors is an integer number (6060810).

Almost surely, 2^66166914 is an apocalyptic number.

66166914 is an abundant number, since it is smaller than the sum of its proper divisors (79292526).

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

66166914 is a wasteful number, since it uses less digits than its factorization.

66166914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91166 (or 91155 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 66166914 is about 8134.3047643914. The cubic root of 66166914 is about 404.4643918085.

It can be divided in two parts, 6616 and 6914, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 66166914 in words is "sixty-six million, one hundred sixty-six thousand, nine hundred fourteen".