67224947 has 2 divisors, whose sum is σ = 67224948. Its totient is φ = 67224946.

The previous prime is 67224923. The next prime is 67224961. The reversal of 67224947 is 74942276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67224947 - 2¹² = 67220851 is a prime.

It is not a weakly prime, because it can be changed into another prime (67226947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33612473 + 33612474.

It is an arithmetic number, because the mean of its divisors is an integer number (33612474).

Almost surely, 2^67224947 is an apocalyptic number.

67224947 is a deficient number, since it is larger than the sum of its proper divisors (1).

67224947 is an equidigital number, since it uses as much as digits as its factorization.

67224947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 67224947 is about 8199.0820827700. The cubic root of 67224947 is about 406.6088461047.

The spelling of 67224947 in words is "sixty-seven million, two hundred twenty-four thousand, nine hundred forty-seven".