67424047 has 2 divisors, whose sum is σ = 67424048. Its totient is φ = 67424046.

The previous prime is 67424011. The next prime is 67424069. The reversal of 67424047 is 74042476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67424047 is a prime.

It is a super-2 number, since 2×67424047² = 9092004227716418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67424087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33712023 + 33712024.

It is an arithmetic number, because the mean of its divisors is an integer number (33712024).

Almost surely, 2^67424047 is an apocalyptic number.

67424047 is a deficient number, since it is larger than the sum of its proper divisors (1).

67424047 is an equidigital number, since it uses as much as digits as its factorization.

67424047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 67424047 is about 8211.2147091645. The cubic root of 67424047 is about 407.0098680163.

The spelling of 67424047 in words is "sixty-seven million, four hundred twenty-four thousand, forty-seven".