66206101 has 16 divisors (see below), whose sum is σ = 74309760. Its totient is φ = 58564800.

The previous prime is 66206093. The next prime is 66206131. The reversal of 66206101 is 10160266.

It is a cyclic number.

It is not a de Polignac number, because 66206101 - 2³ = 66206093 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 (66206131) 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, 56346 + ... + 57508.

It is an arithmetic number, because the mean of its divisors is an integer number (4644360).

Almost surely, 2^66206101 is an apocalyptic number.

It is an amenable number.

66206101 is a deficient number, since it is larger than the sum of its proper divisors (8103659).

66206101 is a wasteful number, since it uses less digits than its factorization.

66206101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 66206101 is about 8136.7131570432. The cubic root of 66206101 is about 404.5442233396.

Adding to 66206101 its reverse (10160266), we get a palindrome (76366367).

It can be divided in two parts, 6620 and 6101, that added together give a palindrome (12721).

The spelling of 66206101 in words is "sixty-six million, two hundred six thousand, one hundred one".