64135427 has 2 divisors, whose sum is σ = 64135428. Its totient is φ = 64135426.

The previous prime is 64135399. The next prime is 64135433. The reversal of 64135427 is 72453146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64135427 - 2⁶ = 64135363 is a prime.

It is a super-2 number, since 2×64135427² = 8226705992944658, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64135393 and 64135402.

It is not a weakly prime, because it can be changed into another prime (64135457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32067713 + 32067714.

It is an arithmetic number, because the mean of its divisors is an integer number (32067714).

Almost surely, 2^64135427 is an apocalyptic number.

64135427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64135427 is an equidigital number, since it uses as much as digits as its factorization.

64135427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 64135427 is about 8008.4597145768. The cubic root of 64135427 is about 400.2819408101.

The spelling of 64135427 in words is "sixty-four million, one hundred thirty-five thousand, four hundred twenty-seven".