71324563 has 2 divisors, whose sum is σ = 71324564. Its totient is φ = 71324562.

The previous prime is 71324527. The next prime is 71324579. The reversal of 71324563 is 36542317.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71324563 is a prime.

It is not a weakly prime, because it can be changed into another prime (71324593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35662281 + 35662282.

It is an arithmetic number, because the mean of its divisors is an integer number (35662282).

Almost surely, 2^71324563 is an apocalyptic number.

71324563 is a deficient number, since it is larger than the sum of its proper divisors (1).

71324563 is an equidigital number, since it uses as much as digits as its factorization.

71324563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 71324563 is about 8445.3870840832. The cubic root of 71324563 is about 414.7117812973.

The spelling of 71324563 in words is "seventy-one million, three hundred twenty-four thousand, five hundred sixty-three".