66650201 has 8 divisors (see below), whose sum is σ = 67314240. Its totient is φ = 65989648.

The previous prime is 66650197. The next prime is 66650219. The reversal of 66650201 is 10205666.

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 66650201 - 2² = 66650197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66650261) 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, 52310 + ... + 53568.

It is an arithmetic number, because the mean of its divisors is an integer number (8414280).

Almost surely, 2^66650201 is an apocalyptic number.

It is an amenable number.

66650201 is a deficient number, since it is larger than the sum of its proper divisors (664039).

66650201 is a wasteful number, since it uses less digits than its factorization.

66650201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66650201 is about 8163.9574349699. The cubic root of 66650201 is about 405.4467477860.

Adding to 66650201 its reverse (10205666), we get a palindrome (76855867).

The spelling of 66650201 in words is "sixty-six million, six hundred fifty thousand, two hundred one".