63715567 has 2 divisors, whose sum is σ = 63715568. Its totient is φ = 63715566.

The previous prime is 63715511. The next prime is 63715573. The reversal of 63715567 is 76551736.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63715567 - 2¹⁹ = 63191279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63715577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31857783 + 31857784.

It is an arithmetic number, because the mean of its divisors is an integer number (31857784).

Almost surely, 2^63715567 is an apocalyptic number.

63715567 is a deficient number, since it is larger than the sum of its proper divisors (1).

63715567 is an equidigital number, since it uses as much as digits as its factorization.

63715567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 40.

The square root of 63715567 is about 7982.2031419903. The cubic root of 63715567 is about 399.4065512318.

The spelling of 63715567 in words is "sixty-three million, seven hundred fifteen thousand, five hundred sixty-seven".