63668747 has 2 divisors, whose sum is σ = 63668748. Its totient is φ = 63668746.

The previous prime is 63668713. The next prime is 63668779. The reversal of 63668747 is 74786636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63668747 - 2¹² = 63664651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63668047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31834373 + 31834374.

It is an arithmetic number, because the mean of its divisors is an integer number (31834374).

Almost surely, 2^63668747 is an apocalyptic number.

63668747 is a deficient number, since it is larger than the sum of its proper divisors (1).

63668747 is an equidigital number, since it uses as much as digits as its factorization.

63668747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The square root of 63668747 is about 7979.2698287500. The cubic root of 63668747 is about 399.3086955169.

The spelling of 63668747 in words is "sixty-three million, six hundred sixty-eight thousand, seven hundred forty-seven".