63613567 has 2 divisors, whose sum is σ = 63613568. Its totient is φ = 63613566.

The previous prime is 63613547. The next prime is 63613573. The reversal of 63613567 is 76531636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63613567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63613547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31806783 + 31806784.

It is an arithmetic number, because the mean of its divisors is an integer number (31806784).

Almost surely, 2^63613567 is an apocalyptic number.

63613567 is a deficient number, since it is larger than the sum of its proper divisors (1).

63613567 is an equidigital number, since it uses as much as digits as its factorization.

63613567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 37.

The square root of 63613567 is about 7975.8113693843. The cubic root of 63613567 is about 399.1933054534.

The spelling of 63613567 in words is "sixty-three million, six hundred thirteen thousand, five hundred sixty-seven".