66795213 has 4 divisors (see below), whose sum is σ = 89060288. Its totient is φ = 44530140.

The previous prime is 66795161. The next prime is 66795217. The reversal of 66795213 is 31259766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66795213 - 2⁹ = 66794701 is a prime.

It is a Duffinian number.

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, 11132533 + ... + 11132538.

It is an arithmetic number, because the mean of its divisors is an integer number (22265072).

Almost surely, 2^66795213 is an apocalyptic number.

It is an amenable number.

66795213 is a deficient number, since it is larger than the sum of its proper divisors (22265075).

66795213 is a wasteful number, since it uses less digits than its factorization.

66795213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22265074.

The product of its digits is 68040, while the sum is 39.

The square root of 66795213 is about 8172.8338414530. The cubic root of 66795213 is about 405.7405806337.

The spelling of 66795213 in words is "sixty-six million, seven hundred ninety-five thousand, two hundred thirteen".