64021267 has 2 divisors, whose sum is σ = 64021268. Its totient is φ = 64021266.

The previous prime is 64021229. The next prime is 64021271. The reversal of 64021267 is 76212046.

64021267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64021267 is a prime.

It is not a weakly prime, because it can be changed into another prime (64027267) 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, 32010633 + 32010634.

It is an arithmetic number, because the mean of its divisors is an integer number (32010634).

Almost surely, 2^64021267 is an apocalyptic number.

64021267 is a deficient number, since it is larger than the sum of its proper divisors (1).

64021267 is an equidigital number, since it uses as much as digits as its factorization.

64021267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 64021267 is about 8001.3290770971. The cubic root of 64021267 is about 400.0443013433.

The spelling of 64021267 in words is "sixty-four million, twenty-one thousand, two hundred sixty-seven".