66513119 has 8 divisors (see below), whose sum is σ = 68753040. Its totient is φ = 64310400.

The previous prime is 66513113. The next prime is 66513121. The reversal of 66513119 is 91131566.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66513119 - 2¹⁶ = 66447583 is a prime.

It is a super-2 number, since 2×66513119² = 8847989998216322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66513113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5642 + ... + 12839.

It is an arithmetic number, because the mean of its divisors is an integer number (8594130).

Almost surely, 2^66513119 is an apocalyptic number.

66513119 is a deficient number, since it is larger than the sum of its proper divisors (2239921).

66513119 is a wasteful number, since it uses less digits than its factorization.

66513119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18601.

The product of its digits is 4860, while the sum is 32.

The square root of 66513119 is about 8155.5575529819. The cubic root of 66513119 is about 405.1685910914.

The spelling of 66513119 in words is "sixty-six million, five hundred thirteen thousand, one hundred nineteen".