66281514 has 16 divisors (see below), whose sum is σ = 142760352. Its totient is φ = 20394288.

The previous prime is 66281513. The next prime is 66281539. The reversal of 66281514 is 41518266.

66281514 = 2252² + 2253² + ... + 2264².

66281514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66281513) 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 7 ways as a sum of consecutive naturals, for example, 424804 + ... + 424959.

It is an arithmetic number, because the mean of its divisors is an integer number (8922522).

Almost surely, 2^66281514 is an apocalyptic number.

66281514 is an abundant number, since it is smaller than the sum of its proper divisors (76478838).

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

66281514 is a wasteful number, since it uses less digits than its factorization.

66281514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849781.

The product of its digits is 11520, while the sum is 33.

The square root of 66281514 is about 8141.3459575183. The cubic root of 66281514 is about 404.6977656713.

It can be divided in two parts, 66281 and 514, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 66281514 in words is "sixty-six million, two hundred eighty-one thousand, five hundred fourteen".