20073637 has 2 divisors, whose sum is σ = 20073638. Its totient is φ = 20073636.

The previous prime is 20073623. The next prime is 20073661. The reversal of 20073637 is 73637002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18887716 + 1185921 = 4346^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 20073637 - 2⁷ = 20073509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20073667) 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, 10036818 + 10036819.

It is an arithmetic number, because the mean of its divisors is an integer number (10036819).

Almost surely, 2^20073637 is an apocalyptic number.

It is an amenable number.

20073637 is a deficient number, since it is larger than the sum of its proper divisors (1).

20073637 is an equidigital number, since it uses as much as digits as its factorization.

20073637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 20073637 is about 4480.3612577559. The cubic root of 20073637 is about 271.7744895916.

It can be divided in two parts, 200 and 73637, that added together give a palindrome (73837).

The spelling of 20073637 in words is "twenty million, seventy-three thousand, six hundred thirty-seven".