20836337 has 2 divisors, whose sum is σ = 20836338. Its totient is φ = 20836336.

The previous prime is 20836327. The next prime is 20836351. The reversal of 20836337 is 73363802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 6241 = 4564^2 + 79^2 .

It is a cyclic number.

It is not a de Polignac number, because 20836337 - 2¹⁸ = 20574193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20836307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10418168 + 10418169.

It is an arithmetic number, because the mean of its divisors is an integer number (10418169).

Almost surely, 2^20836337 is an apocalyptic number.

It is an amenable number.

20836337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20836337 is an equidigital number, since it uses as much as digits as its factorization.

20836337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20836337 is about 4564.6836692152. The cubic root of 20836337 is about 275.1738272908.

The spelling of 20836337 in words is "twenty million, eight hundred thirty-six thousand, three hundred thirty-seven".