63965947 has 2 divisors, whose sum is σ = 63965948. Its totient is φ = 63965946.

The previous prime is 63965939. The next prime is 63965953. The reversal of 63965947 is 74956936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63965947 - 2³ = 63965939 is a prime.

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 63965947.

It is not a weakly prime, because it can be changed into another prime (63965147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31982973 + 31982974.

It is an arithmetic number, because the mean of its divisors is an integer number (31982974).

Almost surely, 2^63965947 is an apocalyptic number.

63965947 is a deficient number, since it is larger than the sum of its proper divisors (1).

63965947 is an equidigital number, since it uses as much as digits as its factorization.

63965947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 63965947 is about 7997.8714043175. The cubic root of 63965947 is about 399.9290436637.

The spelling of 63965947 in words is "sixty-three million, nine hundred sixty-five thousand, nine hundred forty-seven".