64085719 has 2 divisors, whose sum is σ = 64085720. Its totient is φ = 64085718.

The previous prime is 64085713. The next prime is 64085729. The reversal of 64085719 is 91758046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64085719 - 2¹⁵ = 64052951 is a prime.

It is a super-2 number, since 2×64085719² = 8213958759493922, which contains 22 as substring.

It is equal to p_3789841 and since 64085719 and 3789841 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64085713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32042859 + 32042860.

It is an arithmetic number, because the mean of its divisors is an integer number (32042860).

Almost surely, 2^64085719 is an apocalyptic number.

64085719 is a deficient number, since it is larger than the sum of its proper divisors (1).

64085719 is an equidigital number, since it uses as much as digits as its factorization.

64085719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 64085719 is about 8005.3556448168. The cubic root of 64085719 is about 400.1785015811.

The spelling of 64085719 in words is "sixty-four million, eighty-five thousand, seven hundred nineteen".