64126613 has 2 divisors, whose sum is σ = 64126614. Its totient is φ = 64126612.

The previous prime is 64126609. The next prime is 64126633. The reversal of 64126613 is 31662146.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58400164 + 5726449 = 7642^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 64126613 - 2² = 64126609 is a prime.

It is a super-2 number, since 2×64126613² = 8224444989703538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64126633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32063306 + 32063307.

It is an arithmetic number, because the mean of its divisors is an integer number (32063307).

Almost surely, 2^64126613 is an apocalyptic number.

It is an amenable number.

64126613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64126613 is an equidigital number, since it uses as much as digits as its factorization.

64126613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 64126613 is about 8007.9094025844. The cubic root of 64126613 is about 400.2636033284.

Adding to 64126613 its reverse (31662146), we get a palindrome (95788759).

The spelling of 64126613 in words is "sixty-four million, one hundred twenty-six thousand, six hundred thirteen".