66395798 has 8 divisors (see below), whose sum is σ = 113821392. Its totient is φ = 28455336.

The previous prime is 66395789. The next prime is 66395801. The reversal of 66395798 is 89759366.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371265 + ... + 2371292.

It is an arithmetic number, because the mean of its divisors is an integer number (14227674).

Almost surely, 2^66395798 is an apocalyptic number.

66395798 is a deficient number, since it is larger than the sum of its proper divisors (47425594).

66395798 is a wasteful number, since it uses less digits than its factorization.

66395798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742566.

The product of its digits is 2449440, while the sum is 53.

The square root of 66395798 is about 8148.3616758217. The cubic root of 66395798 is about 404.9302282896.

The spelling of 66395798 in words is "sixty-six million, three hundred ninety-five thousand, seven hundred ninety-eight".