64000067 has 2 divisors, whose sum is σ = 64000068. Its totient is φ = 64000066.

The previous prime is 64000063. The next prime is 64000091. The reversal of 64000067 is 76000046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64000067 - 2² = 64000063 is a prime.

It is not a weakly prime, because it can be changed into another prime (64000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32000033 + 32000034.

It is an arithmetic number, because the mean of its divisors is an integer number (32000034).

Almost surely, 2^64000067 is an apocalyptic number.

64000067 is a deficient number, since it is larger than the sum of its proper divisors (1).

64000067 is an equidigital number, since it uses as much as digits as its factorization.

64000067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 64000067 is about 8000.0041874989. The cubic root of 64000067 is about 400.0001395833. Note that the first 3 decimals are identical.

The spelling of 64000067 in words is "sixty-four million, sixty-seven", and thus it is an aban number.