66632201 has 8 divisors (see below), whose sum is σ = 67415040. Its totient is φ = 65853648.

The previous prime is 66632179. The next prime is 66632207. The reversal of 66632201 is 10223666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66632201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66632207) 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, 38135 + ... + 39843.

It is an arithmetic number, because the mean of its divisors is an integer number (8426880).

Almost surely, 2^66632201 is an apocalyptic number.

It is an amenable number.

66632201 is a deficient number, since it is larger than the sum of its proper divisors (782839).

66632201 is a wasteful number, since it uses less digits than its factorization.

66632201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 66632201 is about 8162.8549539974. The cubic root of 66632201 is about 405.4102452777.

Adding to 66632201 its reverse (10223666), we get a palindrome (76855867).

The spelling of 66632201 in words is "sixty-six million, six hundred thirty-two thousand, two hundred one".