21060063 has 6 divisors (see below), whose sum is σ = 30420104. Its totient is φ = 14040036.

The previous prime is 21060049. The next prime is 21060073. The reversal of 21060063 is 36006012.

It is a happy number.

21060063 is a `hidden beast` number, since 2 + 1 + 0 + 600 + 63 = 666.

It is not a de Polignac number, because 21060063 - 2¹² = 21055967 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 (21060023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1169995 + ... + 1170012.

Almost surely, 2^21060063 is an apocalyptic number.

21060063 is a deficient number, since it is larger than the sum of its proper divisors (9360041).

21060063 is a wasteful number, since it uses less digits than its factorization.

21060063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340013 (or 2340010 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 21060063 is about 4589.1244262931. The cubic root of 21060063 is about 276.1551978434.

Adding to 21060063 its reverse (36006012), we get a palindrome (57066075).

The spelling of 21060063 in words is "twenty-one million, sixty thousand, sixty-three".