67724563 has 2 divisors, whose sum is σ = 67724564. Its totient is φ = 67724562.

The previous prime is 67724551. The next prime is 67724593. The reversal of 67724563 is 36542776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67724563 - 2⁹ = 67724051 is a prime.

It is not a weakly prime, because it can be changed into another prime (67724533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33862281 + 33862282.

It is an arithmetic number, because the mean of its divisors is an integer number (33862282).

Almost surely, 2^67724563 is an apocalyptic number.

67724563 is a deficient number, since it is larger than the sum of its proper divisors (1).

67724563 is an equidigital number, since it uses as much as digits as its factorization.

67724563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 40.

The square root of 67724563 is about 8229.4934838057. The cubic root of 67724563 is about 407.6136669625.

The spelling of 67724563 in words is "sixty-seven million, seven hundred twenty-four thousand, five hundred sixty-three".