63500137 has 2 divisors, whose sum is σ = 63500138. Its totient is φ = 63500136.

The previous prime is 63500131. The next prime is 63500141. The reversal of 63500137 is 73100536.

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., 60388441 + 3111696 = 7771^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 63500137 - 2⁷ = 63500009 is a prime.

It is not a weakly prime, because it can be changed into another prime (63500131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31750068 + 31750069.

It is an arithmetic number, because the mean of its divisors is an integer number (31750069).

Almost surely, 2^63500137 is an apocalyptic number.

It is an amenable number.

63500137 is a deficient number, since it is larger than the sum of its proper divisors (1).

63500137 is an equidigital number, since it uses as much as digits as its factorization.

63500137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 63500137 is about 7968.6973213945. The cubic root of 63500137 is about 398.9558957370.

The spelling of 63500137 in words is "sixty-three million, five hundred thousand, one hundred thirty-seven".