20868001 has 8 divisors (see below), whose sum is σ = 26017344. Its totient is φ = 16260720.

The previous prime is 20867989. The next prime is 20868007. The reversal of 20868001 is 10086802.

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

It is not a de Polignac number, because 20868001 - 2⁹ = 20867489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20868007) 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, 135430 + ... + 135583.

It is an arithmetic number, because the mean of its divisors is an integer number (3252168).

Almost surely, 2^20868001 is an apocalyptic number.

It is an amenable number.

20868001 is a deficient number, since it is larger than the sum of its proper divisors (5149343).

20868001 is a wasteful number, since it uses less digits than its factorization.

20868001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271031.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 20868001 is about 4568.1507199303. The cubic root of 20868001 is about 275.3131463109.

The spelling of 20868001 in words is "twenty million, eight hundred sixty-eight thousand, one".