63541637 has 2 divisors, whose sum is σ = 63541638. Its totient is φ = 63541636.

The previous prime is 63541633. The next prime is 63541649. The reversal of 63541637 is 73614536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45171841 + 18369796 = 6721^2 + 4286^2 .

It is a cyclic number.

It is not a de Polignac number, because 63541637 - 2² = 63541633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63541597 and 63541606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63541633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31770818 + 31770819.

It is an arithmetic number, because the mean of its divisors is an integer number (31770819).

Almost surely, 2^63541637 is an apocalyptic number.

It is an amenable number.

63541637 is a deficient number, since it is larger than the sum of its proper divisors (1).

63541637 is an equidigital number, since it uses as much as digits as its factorization.

63541637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 63541637 is about 7971.3008348701. The cubic root of 63541637 is about 399.0427882748.

The spelling of 63541637 in words is "sixty-three million, five hundred forty-one thousand, six hundred thirty-seven".