20658001 has 8 divisors (see below), whose sum is σ = 25425344. Its totient is φ = 16344720.

The previous prime is 20657999. The next prime is 20658037. The reversal of 20658001 is 10085602.

It is a happy number.

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

It is not a de Polignac number, because 20658001 - 2¹ = 20657999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20658061) 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, 113415 + ... + 113596.

It is an arithmetic number, because the mean of its divisors is an integer number (3178168).

Almost surely, 2^20658001 is an apocalyptic number.

It is an amenable number.

20658001 is a deficient number, since it is larger than the sum of its proper divisors (4767343).

20658001 is a wasteful number, since it uses less digits than its factorization.

20658001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227031.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 20658001 is about 4545.1073694688. The cubic root of 20658001 is about 274.3865156203.

The spelling of 20658001 in words is "twenty million, six hundred fifty-eight thousand, one".