64147427 has 2 divisors, whose sum is σ = 64147428. Its totient is φ = 64147426.

The previous prime is 64147403. The next prime is 64147429. The reversal of 64147427 is 72474146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64147427 - 2¹⁴ = 64131043 is a prime.

It is a super-2 number, since 2×64147427² = 8229784781440658, which contains 22 as substring.

Together with 64147429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64147429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32073713 + 32073714.

It is an arithmetic number, because the mean of its divisors is an integer number (32073714).

Almost surely, 2^64147427 is an apocalyptic number.

64147427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64147427 is an equidigital number, since it uses as much as digits as its factorization.

64147427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 35.

The square root of 64147427 is about 8009.2088872747. The cubic root of 64147427 is about 400.3069040479.

The spelling of 64147427 in words is "sixty-four million, one hundred forty-seven thousand, four hundred twenty-seven".