20586964 has 6 divisors (see below), whose sum is σ = 36027194. Its totient is φ = 10293480.

The previous prime is 20586953. The next prime is 20586967. The reversal of 20586964 is 46968502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 2862864 = 4210^2 + 1692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20586967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2573367 + ... + 2573374.

Almost surely, 2^20586964 is an apocalyptic number.

It is an amenable number.

20586964 is a deficient number, since it is larger than the sum of its proper divisors (15440230).

20586964 is a wasteful number, since it uses less digits than its factorization.

20586964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146745 (or 5146743 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 20586964 is about 4537.2859729138. The cubic root of 20586964 is about 274.0716419835.

The spelling of 20586964 in words is "twenty million, five hundred eighty-six thousand, nine hundred sixty-four".