66271485 has 16 divisors (see below), whose sum is σ = 121182336. Its totient is φ = 30295488.

The previous prime is 66271481. The next prime is 66271489. The reversal of 66271485 is 58417266.

It is an interprime number because it is at equal distance from previous prime (66271481) and next prime (66271489).

It is not a de Polignac number, because 66271485 - 2² = 66271481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66271481) 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, 315474 + ... + 315683.

It is an arithmetic number, because the mean of its divisors is an integer number (7573896).

Almost surely, 2^66271485 is an apocalyptic number.

It is an amenable number.

66271485 is a deficient number, since it is larger than the sum of its proper divisors (54910851).

66271485 is a wasteful number, since it uses less digits than its factorization.

66271485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631172.

The product of its digits is 80640, while the sum is 39.

The square root of 66271485 is about 8140.7300041213. The cubic root of 66271485 is about 404.6773531492.

The spelling of 66271485 in words is "sixty-six million, two hundred seventy-one thousand, four hundred eighty-five".