63138737 has 2 divisors, whose sum is σ = 63138738. Its totient is φ = 63138736.

The previous prime is 63138727. The next prime is 63138739. The reversal of 63138737 is 73783136.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36192256 + 26946481 = 6016^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 63138737 - 2¹² = 63134641 is a prime.

Together with 63138739, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63138737.

It is not a weakly prime, because it can be changed into another prime (63138739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31569368 + 31569369.

It is an arithmetic number, because the mean of its divisors is an integer number (31569369).

Almost surely, 2^63138737 is an apocalyptic number.

It is an amenable number.

63138737 is a deficient number, since it is larger than the sum of its proper divisors (1).

63138737 is an equidigital number, since it uses as much as digits as its factorization.

63138737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 63138737 is about 7945.9887364632. The cubic root of 63138737 is about 398.1975926011.

The spelling of 63138737 in words is "sixty-three million, one hundred thirty-eight thousand, seven hundred thirty-seven".