66019204 has 12 divisors (see below), whose sum is σ = 116377884. Its totient is φ = 32768384.

The previous prime is 66019201. The next prime is 66019237. The reversal of 66019204 is 40291066.

It can be written as a sum of positive squares in 2 ways, for example, as 57304900 + 8714304 = 7570^2 + 2952^2 .

It is not an unprimeable number, because it can be changed into a prime (66019201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 59689 + ... + 60784.

It is an arithmetic number, because the mean of its divisors is an integer number (9698157).

Almost surely, 2^66019204 is an apocalyptic number.

It is an amenable number.

66019204 is a deficient number, since it is larger than the sum of its proper divisors (50358680).

66019204 is a wasteful number, since it uses less digits than its factorization.

66019204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120614 (or 120612 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 66019204 is about 8125.2202431688. The cubic root of 66019204 is about 404.1631942074.

The spelling of 66019204 in words is "sixty-six million, nineteen thousand, two hundred four".