66271007 has 4 divisors (see below), whose sum is σ = 72295656. Its totient is φ = 60246360.

The previous prime is 66270979. The next prime is 66271039. The reversal of 66271007 is 70017266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66271007 - 2⁶ = 66270943 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 (66271057) 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, 3012308 + ... + 3012329.

It is an arithmetic number, because the mean of its divisors is an integer number (18073914).

Almost surely, 2^66271007 is an apocalyptic number.

66271007 is a deficient number, since it is larger than the sum of its proper divisors (6024649).

66271007 is a wasteful number, since it uses less digits than its factorization.

66271007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024648.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 66271007 is about 8140.7006455219. The cubic root of 66271007 is about 404.6763802006.

The spelling of 66271007 in words is "sixty-six million, two hundred seventy-one thousand, seven".