66206201 has 4 divisors (see below), whose sum is σ = 67328400. Its totient is φ = 65084004.

The previous prime is 66206171. The next prime is 66206219. The reversal of 66206201 is 10260266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66206201 - 2⁶ = 66206137 is a prime.

It is a super-2 number, since 2×66206201² = 8766522101704802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66206281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561011 + ... + 561128.

It is an arithmetic number, because the mean of its divisors is an integer number (16832100).

Almost surely, 2^66206201 is an apocalyptic number.

It is an amenable number.

66206201 is a deficient number, since it is larger than the sum of its proper divisors (1122199).

66206201 is a wasteful number, since it uses less digits than its factorization.

66206201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122198.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66206201 is about 8136.7193020283. The cubic root of 66206201 is about 404.5444270188.

Adding to 66206201 its reverse (10260266), we get a palindrome (76466467).

It can be divided in two parts, 6620 and 6201, that added together give a palindrome (12821).

The spelling of 66206201 in words is "sixty-six million, two hundred six thousand, two hundred one".