20137066 has 4 divisors (see below), whose sum is σ = 30205602. Its totient is φ = 10068532.

The previous prime is 20137057. The next prime is 20137081. The reversal of 20137066 is 66073102.

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., 20061441 + 75625 = 4479^2 + 275^2 .

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20137066.

It is an unprimeable number.

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, 5034265 + ... + 5034268.

Almost surely, 2^20137066 is an apocalyptic number.

20137066 is a deficient number, since it is larger than the sum of its proper divisors (10068536).

20137066 is a wasteful number, since it uses less digits than its factorization.

20137066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10068535.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20137066 is about 4487.4342335014. The cubic root of 20137066 is about 272.0604410811.

The spelling of 20137066 in words is "twenty million, one hundred thirty-seven thousand, sixty-six".