20967337 has 2 divisors, whose sum is σ = 20967338. Its totient is φ = 20967336.

The previous prime is 20967313. The next prime is 20967343. The reversal of 20967337 is 73376902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 364816 = 4539^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 20967337 - 2⁷ = 20967209 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20967296 and 20967305.

It is not a weakly prime, because it can be changed into another prime (20967637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10483668 + 10483669.

It is an arithmetic number, because the mean of its divisors is an integer number (10483669).

Almost surely, 2^20967337 is an apocalyptic number.

It is an amenable number.

20967337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20967337 is an equidigital number, since it uses as much as digits as its factorization.

20967337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 20967337 is about 4579.0104826261. The cubic root of 20967337 is about 275.7493041433.

The spelling of 20967337 in words is "twenty million, nine hundred sixty-seven thousand, three hundred thirty-seven".