20704001 has 8 divisors (see below), whose sum is σ = 21429504. Its totient is φ = 19982160.

The previous prime is 20703967. The next prime is 20704007. The reversal of 20704001 is 10040702.

It is a happy number.

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 20704001 - 2⁶ = 20703937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20704007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15575 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (2678688).

Almost surely, 2^20704001 is an apocalyptic number.

It is an amenable number.

20704001 is a deficient number, since it is larger than the sum of its proper divisors (725503).

20704001 is a wasteful number, since it uses less digits than its factorization.

20704001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20704001 is about 4550.1649420653. The cubic root of 20704001 is about 274.5900271284.

Adding to 20704001 its reverse (10040702), we get a palindrome (30744703).

The spelling of 20704001 in words is "twenty million, seven hundred four thousand, one".