20653466 has 4 divisors (see below), whose sum is σ = 30980202. Its totient is φ = 10326732.

The previous prime is 20653447. The next prime is 20653469. The reversal of 20653466 is 66435602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10699441 + 9954025 = 3271^2 + 3155^2 .

It is not an unprimeable number, because it can be changed into a prime (20653469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5163365 + ... + 5163368.

Almost surely, 2^20653466 is an apocalyptic number.

20653466 is a deficient number, since it is larger than the sum of its proper divisors (10326736).

20653466 is a wasteful number, since it uses less digits than its factorization.

20653466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326735.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 20653466 is about 4544.6084539815. The cubic root of 20653466 is about 274.3664356859.

The spelling of 20653466 in words is "twenty million, six hundred fifty-three thousand, four hundred sixty-six".