20658485 has 16 divisors (see below), whose sum is σ = 27392256. Its totient is φ = 14876928.

The previous prime is 20658481. The next prime is 20658503. The reversal of 20658485 is 58485602.

It is a cyclic number.

It is not a de Polignac number, because 20658485 - 2² = 20658481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20658481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3329 + ... + 7238.

It is an arithmetic number, because the mean of its divisors is an integer number (1712016).

Almost surely, 2^20658485 is an apocalyptic number.

It is an amenable number.

20658485 is a deficient number, since it is larger than the sum of its proper divisors (6733771).

20658485 is a wasteful number, since it uses less digits than its factorization.

20658485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 20658485 is about 4545.1606132237. The cubic root of 20658485 is about 274.3886584871.

The spelling of 20658485 in words is "twenty million, six hundred fifty-eight thousand, four hundred eighty-five".