38645567 has 2 divisors, whose sum is σ = 38645568. Its totient is φ = 38645566.

The previous prime is 38645527. The next prime is 38645569. The reversal of 38645567 is 76554683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38645567 is a prime.

Together with 38645569, 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 (38645569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19322783 + 19322784.

It is an arithmetic number, because the mean of its divisors is an integer number (19322784).

Almost surely, 2^38645567 is an apocalyptic number.

38645567 is a deficient number, since it is larger than the sum of its proper divisors (1).

38645567 is an equidigital number, since it uses as much as digits as its factorization.

38645567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The square root of 38645567 is about 6216.5558792631. Note that the first 3 decimals coincide. The cubic root of 38645567 is about 338.0907025230.

The spelling of 38645567 in words is "thirty-eight million, six hundred forty-five thousand, five hundred sixty-seven".