66337271 has 16 divisors (see below), whose sum is σ = 89069568. Its totient is φ = 47714400.

The previous prime is 66337259. The next prime is 66337273. The reversal of 66337271 is 17273366.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66337271 - 2⁶ = 66337207 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66337273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32135 + ... + 34136.

It is an arithmetic number, because the mean of its divisors is an integer number (5566848).

Almost surely, 2^66337271 is an apocalyptic number.

66337271 is a deficient number, since it is larger than the sum of its proper divisors (22732297).

66337271 is a wasteful number, since it uses less digits than its factorization.

66337271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66302.

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

The square root of 66337271 is about 8144.7695486122. The cubic root of 66337271 is about 404.8112131353.

The spelling of 66337271 in words is "sixty-six million, three hundred thirty-seven thousand, two hundred seventy-one".