20630085 has 16 divisors (see below), whose sum is σ = 37723776. Its totient is φ = 9430848.

The previous prime is 20630083. The next prime is 20630087. The reversal of 20630085 is 58003602.

It is an interprime number because it is at equal distance from previous prime (20630083) and next prime (20630087).

It is not a de Polignac number, because 20630085 - 2¹ = 20630083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630083) 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, 98134 + ... + 98343.

It is an arithmetic number, because the mean of its divisors is an integer number (2357736).

Almost surely, 2^20630085 is an apocalyptic number.

It is an amenable number.

20630085 is a deficient number, since it is larger than the sum of its proper divisors (17093691).

20630085 is a wasteful number, since it uses less digits than its factorization.

20630085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196492.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20630085 is about 4542.0353367186. The cubic root of 20630085 is about 274.2628633384.

Adding to 20630085 its reverse (58003602), we get a palindrome (78633687).

The spelling of 20630085 in words is "twenty million, six hundred thirty thousand, eighty-five".