6660101 has 8 divisors (see below), whose sum is σ = 7627200. Its totient is φ = 5696928.

The previous prime is 6660091. The next prime is 6660103. The reversal of 6660101 is 1010666.

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 6660101 - 2¹⁰ = 6659077 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660103) 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, 5825 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (953400).

Almost surely, 2^6660101 is an apocalyptic number.

It is an amenable number.

6660101 is a deficient number, since it is larger than the sum of its proper divisors (967099).

6660101 is a wasteful number, since it uses less digits than its factorization.

6660101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 6660101 is about 2580.7171483911. The cubic root of 6660101 is about 188.1454001932.

Adding to 6660101 its reverse (1010666), we get a palindrome (7670767).

The spelling of 6660101 in words is "six million, six hundred sixty thousand, one hundred one".