63679613 has 2 divisors, whose sum is σ = 63679614. Its totient is φ = 63679612.

The previous prime is 63679607. The next prime is 63679619. The reversal of 63679613 is 31697636.

It is a balanced prime because it is at equal distance from previous prime (63679607) and next prime (63679619).

It can be written as a sum of positive squares in only one way, i.e., 53611684 + 10067929 = 7322^2 + 3173^2 .

It is a cyclic number.

It is not a de Polignac number, because 63679613 - 2²⁴ = 46902397 is a prime.

It is a super-2 number, since 2×63679613² = 8110186223659538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63679619) 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, 31839806 + 31839807.

It is an arithmetic number, because the mean of its divisors is an integer number (31839807).

Almost surely, 2^63679613 is an apocalyptic number.

It is an amenable number.

63679613 is a deficient number, since it is larger than the sum of its proper divisors (1).

63679613 is an equidigital number, since it uses as much as digits as its factorization.

63679613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 41.

The square root of 63679613 is about 7979.9506890707. The cubic root of 63679613 is about 399.3314101751.

The spelling of 63679613 in words is "sixty-three million, six hundred seventy-nine thousand, six hundred thirteen".