20536066 has 8 divisors (see below), whose sum is σ = 30823884. Its totient is φ = 10261440.

The previous prime is 20536063. The next prime is 20536081. The reversal of 20536066 is 66063502.

It can be written as a sum of positive squares in 2 ways, for example, as 13905441 + 6630625 = 3729^2 + 2575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20536063) 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 in 3 ways as a sum of consecutive naturals, for example, 3006 + ... + 7078.

Almost surely, 2^20536066 is an apocalyptic number.

20536066 is a deficient number, since it is larger than the sum of its proper divisors (10287818).

20536066 is a wasteful number, since it uses less digits than its factorization.

20536066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20536066 is about 4531.6736422651. The cubic root of 20536066 is about 273.8455893807.

Adding to 20536066 its reverse (66063502), we get a palindrome (86599568).

The spelling of 20536066 in words is "twenty million, five hundred thirty-six thousand, sixty-six".