63688853 has 2 divisors, whose sum is σ = 63688854. Its totient is φ = 63688852.

The previous prime is 63688847. The next prime is 63688871. The reversal of 63688853 is 35888636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35736484 + 27952369 = 5978^2 + 5287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63688853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63688798 and 63688807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63688753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31844426 + 31844427.

It is an arithmetic number, because the mean of its divisors is an integer number (31844427).

Almost surely, 2^63688853 is an apocalyptic number.

It is an amenable number.

63688853 is a deficient number, since it is larger than the sum of its proper divisors (1).

63688853 is an equidigital number, since it uses as much as digits as its factorization.

63688853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 47.

The square root of 63688853 is about 7980.5296190165. The cubic root of 63688853 is about 399.3507237545.

The spelling of 63688853 in words is "sixty-three million, six hundred eighty-eight thousand, eight hundred fifty-three".