66044814 has 16 divisors (see below), whose sum is σ = 144097920. Its totient is φ = 20013560.

The previous prime is 66044807. The next prime is 66044827. The reversal of 66044814 is 41844066.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500274 + ... + 500405.

It is an arithmetic number, because the mean of its divisors is an integer number (9006120).

Almost surely, 2^66044814 is an apocalyptic number.

66044814 is an abundant number, since it is smaller than the sum of its proper divisors (78053106).

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

66044814 is a wasteful number, since it uses less digits than its factorization.

66044814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000695.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 66044814 is about 8126.7960476439. The cubic root of 66044814 is about 404.2154481005.

The spelling of 66044814 in words is "sixty-six million, forty-four thousand, eight hundred fourteen".