66795216 has 20 divisors (see below), whose sum is σ = 172554432. Its totient is φ = 22265056.

The previous prime is 66795161. The next prime is 66795217. The reversal of 66795216 is 61259766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66795217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695736 + ... + 695831.

Almost surely, 2^66795216 is an apocalyptic number.

It is an amenable number.

66795216 is an abundant number, since it is smaller than the sum of its proper divisors (105759216).

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

66795216 is a wasteful number, since it uses less digits than its factorization.

66795216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391578 (or 1391572 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 66795216 is about 8172.8340249879. The cubic root of 66795216 is about 405.7405867081.

The spelling of 66795216 in words is "sixty-six million, seven hundred ninety-five thousand, two hundred sixteen".