63672517 has 2 divisors, whose sum is σ = 63672518. Its totient is φ = 63672516.

The previous prime is 63672509. The next prime is 63672541. The reversal of 63672517 is 71527636.

63672517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45576001 + 18096516 = 6751^2 + 4254^2 .

It is a cyclic number.

It is not a de Polignac number, because 63672517 - 2³ = 63672509 is a prime.

It is a super-2 number, since 2×63672517² = 8108378842230578, 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 (63672577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31836258 + 31836259.

It is an arithmetic number, because the mean of its divisors is an integer number (31836259).

Almost surely, 2^63672517 is an apocalyptic number.

It is an amenable number.

63672517 is a deficient number, since it is larger than the sum of its proper divisors (1).

63672517 is an equidigital number, since it uses as much as digits as its factorization.

63672517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 63672517 is about 7979.5060624076. The cubic root of 63672517 is about 399.3165767467.

It can be divided in two parts, 636 and 72517, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 63672517 in words is "sixty-three million, six hundred seventy-two thousand, five hundred seventeen".