20386967 has 2 divisors, whose sum is σ = 20386968. Its totient is φ = 20386966.

The previous prime is 20386957. The next prime is 20386969. The reversal of 20386967 is 76968302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20386967 - 2⁶ = 20386903 is a prime.

Together with 20386969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20386969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10193483 + 10193484.

It is an arithmetic number, because the mean of its divisors is an integer number (10193484).

Almost surely, 2^20386967 is an apocalyptic number.

20386967 is a deficient number, since it is larger than the sum of its proper divisors (1).

20386967 is an equidigital number, since it uses as much as digits as its factorization.

20386967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 20386967 is about 4515.1929083927. The cubic root of 20386967 is about 273.1812408205.

The spelling of 20386967 in words is "twenty million, three hundred eighty-six thousand, nine hundred sixty-seven".