66541317 has 8 divisors (see below), whose sum is σ = 89253696. Its totient is φ = 44094912.

The previous prime is 66541313. The next prime is 66541333. The reversal of 66541317 is 71314566.

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

It is not a de Polignac number, because 66541317 - 2² = 66541313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66541313) 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, 65908 + ... + 66909.

It is an arithmetic number, because the mean of its divisors is an integer number (11156712).

Almost surely, 2^66541317 is an apocalyptic number.

It is an amenable number.

66541317 is a deficient number, since it is larger than the sum of its proper divisors (22712379).

66541317 is a wasteful number, since it uses less digits than its factorization.

66541317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132987.

The product of its digits is 15120, while the sum is 33.

The square root of 66541317 is about 8157.2861295899. The cubic root of 66541317 is about 405.2258395960.

The spelling of 66541317 in words is "sixty-six million, five hundred forty-one thousand, three hundred seventeen".