20337073 has 2 divisors, whose sum is σ = 20337074. Its totient is φ = 20337072.

The previous prime is 20337067. The next prime is 20337077. The reversal of 20337073 is 37073302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19651489 + 685584 = 4433^2 + 828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20337073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20337077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10168536 + 10168537.

It is an arithmetic number, because the mean of its divisors is an integer number (10168537).

Almost surely, 2^20337073 is an apocalyptic number.

It is an amenable number.

20337073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20337073 is an equidigital number, since it uses as much as digits as its factorization.

20337073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 25.

The square root of 20337073 is about 4509.6643999304. The cubic root of 20337073 is about 272.9582022624.

The spelling of 20337073 in words is "twenty million, three hundred thirty-seven thousand, seventy-three".