66103001 has 4 divisors (see below), whose sum is σ = 66124032. Its totient is φ = 66081972.

The previous prime is 66102991. The next prime is 66103007. The reversal of 66103001 is 10030166.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10030166 = 2 ⋅5015083.

It is a cyclic number.

It is not a de Polignac number, because 66103001 - 2¹⁸ = 65840857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66103007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4745 + ... + 12438.

It is an arithmetic number, because the mean of its divisors is an integer number (16531008).

Almost surely, 2^66103001 is an apocalyptic number.

It is an amenable number.

66103001 is a deficient number, since it is larger than the sum of its proper divisors (21031).

66103001 is a wasteful number, since it uses less digits than its factorization.

66103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21030.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 66103001 is about 8130.3752065941. The cubic root of 66103001 is about 404.3341209581.

Adding to 66103001 its reverse (10030166), we get a palindrome (76133167).

The spelling of 66103001 in words is "sixty-six million, one hundred three thousand, one".