20653064 has 8 divisors (see below), whose sum is σ = 38724510. Its totient is φ = 10326528.

The previous prime is 20653063. The next prime is 20653081. The reversal of 20653064 is 46035602.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 3496900 = 4142^2 + 1870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20653063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290809 + ... + 1290824.

Almost surely, 2^20653064 is an apocalyptic number.

It is an amenable number.

20653064 is a deficient number, since it is larger than the sum of its proper divisors (18071446).

20653064 is a wasteful number, since it uses less digits than its factorization.

20653064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581639 (or 2581635 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20653064 is about 4544.5642255336. The cubic root of 20653064 is about 274.3646555807.

Adding to 20653064 its reverse (46035602), we get a palindrome (66688666).

The spelling of 20653064 in words is "twenty million, six hundred fifty-three thousand, sixty-four".