64027919 has 2 divisors, whose sum is σ = 64027920. Its totient is φ = 64027918.

The previous prime is 64027907. The next prime is 64027961. The reversal of 64027919 is 91972046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64027919 is a prime.

It is a super-2 number, since 2×64027919² = 8199148822941122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64027319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32013959 + 32013960.

It is an arithmetic number, because the mean of its divisors is an integer number (32013960).

Almost surely, 2^64027919 is an apocalyptic number.

64027919 is a deficient number, since it is larger than the sum of its proper divisors (1).

64027919 is an equidigital number, since it uses as much as digits as its factorization.

64027919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 64027919 is about 8001.7447472411. The cubic root of 64027919 is about 400.0581561276.

It can be divided in two parts, 64027 and 919, that added together give a palindrome (64946).

The spelling of 64027919 in words is "sixty-four million, twenty-seven thousand, nine hundred nineteen".