66109124 has 24 divisors (see below), whose sum is σ = 122847480. Its totient is φ = 31021056.

The previous prime is 66109093. The next prime is 66109129. The reversal of 66109124 is 42190166.

It can be written as a sum of positive squares in 4 ways, for example, as 29506624 + 36602500 = 5432^2 + 6050^2 .

It is not an unprimeable number, because it can be changed into a prime (66109129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26624 + ... + 29000.

It is an arithmetic number, because the mean of its divisors is an integer number (5118645).

Almost surely, 2^66109124 is an apocalyptic number.

It is an amenable number.

66109124 is a deficient number, since it is larger than the sum of its proper divisors (56738356).

66109124 is a wasteful number, since it uses less digits than its factorization.

66109124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807 (or 2805 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 66109124 is about 8130.7517487622. The cubic root of 66109124 is about 404.3466048158.

The spelling of 66109124 in words is "sixty-six million, one hundred nine thousand, one hundred twenty-four".