66576117 has 4 divisors (see below), whose sum is σ = 88768160. Its totient is φ = 44384076.

The previous prime is 66576113. The next prime is 66576121. The reversal of 66576117 is 71167566.

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 an interprime number because it is at equal distance from previous prime (66576113) and next prime (66576121).

It is not a de Polignac number, because 66576117 - 2² = 66576113 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 (66576113) 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, 11096017 + ... + 11096022.

It is an arithmetic number, because the mean of its divisors is an integer number (22192040).

Almost surely, 2^66576117 is an apocalyptic number.

It is an amenable number.

66576117 is a deficient number, since it is larger than the sum of its proper divisors (22192043).

66576117 is a wasteful number, since it uses less digits than its factorization.

66576117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22192042.

The product of its digits is 52920, while the sum is 39.

The square root of 66576117 is about 8159.4189131335. The cubic root of 66576117 is about 405.2964694053.

The spelling of 66576117 in words is "sixty-six million, five hundred seventy-six thousand, one hundred seventeen".