63976513 has 2 divisors, whose sum is σ = 63976514. Its totient is φ = 63976512.

The previous prime is 63976499. The next prime is 63976519. The reversal of 63976513 is 31567936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54066609 + 9909904 = 7353^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 63976513 - 2⁵ = 63976481 is a prime.

It is not a weakly prime, because it can be changed into another prime (63976519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31988256 + 31988257.

It is an arithmetic number, because the mean of its divisors is an integer number (31988257).

Almost surely, 2^63976513 is an apocalyptic number.

It is an amenable number.

63976513 is a deficient number, since it is larger than the sum of its proper divisors (1).

63976513 is an equidigital number, since it uses as much as digits as its factorization.

63976513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 63976513 is about 7998.5319277978. The cubic root of 63976513 is about 399.9510627631.

The spelling of 63976513 in words is "sixty-three million, nine hundred seventy-six thousand, five hundred thirteen".