20711001 has 8 divisors (see below), whose sum is σ = 27699424. Its totient is φ = 13764960.

The previous prime is 20710999. The next prime is 20711003. The reversal of 20711001 is 10011702.

It is an interprime number because it is at equal distance from previous prime (20710999) and next prime (20711003).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20711001 - 2¹ = 20710999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9436 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (3462428).

Almost surely, 2^20711001 is an apocalyptic number.

It is an amenable number.

20711001 is a deficient number, since it is larger than the sum of its proper divisors (6988423).

20711001 is a wasteful number, since it uses less digits than its factorization.

20711001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21191.

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 20711001 is about 4550.9340799445. The cubic root of 20711001 is about 274.6209698370.

Adding to 20711001 its reverse (10011702), we get a palindrome (30722703).

The spelling of 20711001 in words is "twenty million, seven hundred eleven thousand, one".