64071187 has 2 divisors, whose sum is σ = 64071188. Its totient is φ = 64071186.

The previous prime is 64071071. The next prime is 64071193. The reversal of 64071187 is 78117046.

64071187 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-64071187 is a prime.

It is not a weakly prime, because it can be changed into another prime (64071197) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32035593 + 32035594.

It is an arithmetic number, because the mean of its divisors is an integer number (32035594).

Almost surely, 2^64071187 is an apocalyptic number.

64071187 is a deficient number, since it is larger than the sum of its proper divisors (1).

64071187 is an equidigital number, since it uses as much as digits as its factorization.

64071187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 64071187 is about 8004.4479509833. The cubic root of 64071187 is about 400.1482512971.

The spelling of 64071187 in words is "sixty-four million, seventy-one thousand, one hundred eighty-seven".