63971417 has 2 divisors, whose sum is σ = 63971418. Its totient is φ = 63971416.

The previous prime is 63971407. The next prime is 63971431. The reversal of 63971417 is 71417936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63425296 + 546121 = 7964^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 63971417 - 2⁶ = 63971353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63971407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31985708 + 31985709.

It is an arithmetic number, because the mean of its divisors is an integer number (31985709).

Almost surely, 2^63971417 is an apocalyptic number.

It is an amenable number.

63971417 is a deficient number, since it is larger than the sum of its proper divisors (1).

63971417 is an equidigital number, since it uses as much as digits as its factorization.

63971417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 63971417 is about 7998.2133629955. The cubic root of 63971417 is about 399.9404432162.

The spelling of 63971417 in words is "sixty-three million, nine hundred seventy-one thousand, four hundred seventeen".