66065701 has 8 divisors (see below), whose sum is σ = 71576064. Its totient is φ = 60616560.

The previous prime is 66065687. The next prime is 66065707. The reversal of 66065701 is 10756066.

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 66065701 - 2²¹ = 63968549 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 (66065707) 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, 13045 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (8947008).

Almost surely, 2^66065701 is an apocalyptic number.

It is an amenable number.

66065701 is a deficient number, since it is larger than the sum of its proper divisors (5510363).

66065701 is a wasteful number, since it uses less digits than its factorization.

66065701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30611.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 66065701 is about 8128.0810158364. The cubic root of 66065701 is about 404.2580553227.

It can be divided in two parts, 66065 and 701, that added together give a palindrome (66766).

The spelling of 66065701 in words is "sixty-six million, sixty-five thousand, seven hundred one".