66200001 has 16 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 37554768.

The previous prime is 66199999. The next prime is 66200041. The reversal of 66200001 is 10000266.

It is not a de Polignac number, because 66200001 - 2¹ = 66199999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66200041) 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, 8421 + ... + 14258.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^66200001 is an apocalyptic number.

It is an amenable number.

66200001 is a deficient number, since it is larger than the sum of its proper divisors (35406399).

66200001 is a wasteful number, since it uses less digits than its factorization.

66200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22828.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 66200001 is about 8136.3383041759. The cubic root of 66200001 is about 404.5317985252.

Adding to 66200001 its reverse (10000266), we get a palindrome (76200267).

The spelling of 66200001 in words is "sixty-six million, two hundred thousand, one".