20663134 has 16 divisors (see below), whose sum is σ = 32055408. Its totient is φ = 9983232.

The previous prime is 20663107. The next prime is 20663147. The reversal of 20663134 is 43136602.

It is a junction number, because it is equal to n+sod(n) for n = 20663099 and 20663108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7104 + ... + 9580.

It is an arithmetic number, because the mean of its divisors is an integer number (2003463).

Almost surely, 2^20663134 is an apocalyptic number.

20663134 is a deficient number, since it is larger than the sum of its proper divisors (11392274).

20663134 is a wasteful number, since it uses less digits than its factorization.

20663134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20663134 is about 4545.6720075254. The cubic root of 20663134 is about 274.4092398156.

Adding to 20663134 its reverse (43136602), we get a palindrome (63799736).

The spelling of 20663134 in words is "twenty million, six hundred sixty-three thousand, one hundred thirty-four".