66080019 has 8 divisors (see below), whose sum is σ = 89551312. Its totient is φ = 43331040.

The previous prime is 66079999. The next prime is 66080041. The reversal of 66080019 is 91008066.

66080019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66080019 - 2¹³ = 66071827 is a prime.

It is a super-2 number, since 2×66080019² = 8733137822080722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66080099) 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, 180364 + ... + 180729.

It is an arithmetic number, because the mean of its divisors is an integer number (11193914).

Almost surely, 2^66080019 is an apocalyptic number.

66080019 is a deficient number, since it is larger than the sum of its proper divisors (23471293).

66080019 is a wasteful number, since it uses less digits than its factorization.

66080019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361157.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 66080019 is about 8128.9617418216. The cubic root of 66080019 is about 404.2872573073.

The spelling of 66080019 in words is "sixty-six million, eighty thousand, nineteen".