64126519 has 2 divisors, whose sum is σ = 64126520. Its totient is φ = 64126518.

The previous prime is 64126477. The next prime is 64126523. The reversal of 64126519 is 91562146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64126519 - 2¹¹ = 64124471 is a prime.

It is a super-2 number, since 2×64126519² = 8224420878114722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64126589) 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, 32063259 + 32063260.

It is an arithmetic number, because the mean of its divisors is an integer number (32063260).

Almost surely, 2^64126519 is an apocalyptic number.

64126519 is a deficient number, since it is larger than the sum of its proper divisors (1).

64126519 is an equidigital number, since it uses as much as digits as its factorization.

64126519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 64126519 is about 8007.9035333850. The cubic root of 64126519 is about 400.2634077528.

The spelling of 64126519 in words is "sixty-four million, one hundred twenty-six thousand, five hundred nineteen".