63947707 has 2 divisors, whose sum is σ = 63947708. Its totient is φ = 63947706.

The previous prime is 63947701. The next prime is 63947747. The reversal of 63947707 is 70774936.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63947707 is a prime.

It is not a weakly prime, because it can be changed into another prime (63947701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31973853 + 31973854.

It is an arithmetic number, because the mean of its divisors is an integer number (31973854).

Almost surely, 2^63947707 is an apocalyptic number.

63947707 is a deficient number, since it is larger than the sum of its proper divisors (1).

63947707 is an equidigital number, since it uses as much as digits as its factorization.

63947707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 63947707 is about 7996.7310196105. The cubic root of 63947707 is about 399.8910265647.

The spelling of 63947707 in words is "sixty-three million, nine hundred forty-seven thousand, seven hundred seven".