66273713 has 8 divisors (see below), whose sum is σ = 73837440. Its totient is φ = 58966480.

The previous prime is 66273703. The next prime is 66273719. The reversal of 66273713 is 31737266.

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 66273713 - 2⁸ = 66273457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66273719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63578 + ... + 64611.

It is an arithmetic number, because the mean of its divisors is an integer number (9229680).

Almost surely, 2^66273713 is an apocalyptic number.

It is an amenable number.

66273713 is a deficient number, since it is larger than the sum of its proper divisors (7563727).

66273713 is a wasteful number, since it uses less digits than its factorization.

66273713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128247.

The product of its digits is 31752, while the sum is 35.

The square root of 66273713 is about 8140.8668457358. The cubic root of 66273713 is about 404.6818880862.

The spelling of 66273713 in words is "sixty-six million, two hundred seventy-three thousand, seven hundred thirteen".