66110601 has 16 divisors (see below), whose sum is σ = 90771968. Its totient is φ = 42768000.

The previous prime is 66110587. The next prime is 66110647. The reversal of 66110601 is 10601166.

It is not a de Polignac number, because 66110601 - 2⁹ = 66110089 is a prime.

It is a super-2 number, since 2×66110601² = 8741223129162402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66112601) 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, 66216 + ... + 67206.

It is an arithmetic number, because the mean of its divisors is an integer number (5673248).

Almost surely, 2^66110601 is an apocalyptic number.

It is an amenable number.

66110601 is a deficient number, since it is larger than the sum of its proper divisors (24661367).

66110601 is a wasteful number, since it uses less digits than its factorization.

66110601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 66110601 is about 8130.8425762648. The cubic root of 66110601 is about 404.3496160769.

Adding to 66110601 its reverse (10601166), we get a palindrome (76711767).

The spelling of 66110601 in words is "sixty-six million, one hundred ten thousand, six hundred one".