20767339 has 2 divisors, whose sum is σ = 20767340. Its totient is φ = 20767338.

The previous prime is 20767333. The next prime is 20767423. The reversal of 20767339 is 93376702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20767339 - 2¹³ = 20759147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20767298 and 20767307.

It is not a weakly prime, because it can be changed into another prime (20767333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10383669 + 10383670.

It is an arithmetic number, because the mean of its divisors is an integer number (10383670).

Almost surely, 2^20767339 is an apocalyptic number.

20767339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20767339 is an equidigital number, since it uses as much as digits as its factorization.

20767339 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 20767339 is about 4557.1195946563. The cubic root of 20767339 is about 274.8697520947.

The spelling of 20767339 in words is "twenty million, seven hundred sixty-seven thousand, three hundred thirty-nine".