64279427 has 2 divisors, whose sum is σ = 64279428. Its totient is φ = 64279426.

The previous prime is 64279403. The next prime is 64279447. The reversal of 64279427 is 72497246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64279427 - 2²⁴ = 47502211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64279447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32139713 + 32139714.

It is an arithmetic number, because the mean of its divisors is an integer number (32139714).

Almost surely, 2^64279427 is an apocalyptic number.

64279427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64279427 is an equidigital number, since it uses as much as digits as its factorization.

64279427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 64279427 is about 8017.4451666351. The cubic root of 64279427 is about 400.5812944161.

The spelling of 64279427 in words is "sixty-four million, two hundred seventy-nine thousand, four hundred twenty-seven".