66119144 has 32 divisors (see below), whose sum is σ = 152584320. Its totient is φ = 26156736.

The previous prime is 66119113. The next prime is 66119147. The reversal of 66119144 is 44191166.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66119144.

It is not an unprimeable number, because it can be changed into a prime (66119147) 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, 44684 + ... + 46139.

It is an arithmetic number, because the mean of its divisors is an integer number (4768260).

Almost surely, 2^66119144 is an apocalyptic number.

It is an amenable number.

66119144 is an abundant number, since it is smaller than the sum of its proper divisors (86465176).

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

66119144 is a wasteful number, since it uses less digits than its factorization.

66119144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90849 (or 90845 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 66119144 is about 8131.3679046025. The cubic root of 66119144 is about 404.3670323961.

The spelling of 66119144 in words is "sixty-six million, one hundred nineteen thousand, one hundred forty-four".