67424069 has 2 divisors, whose sum is σ = 67424070. Its totient is φ = 67424068.

The previous prime is 67424047. The next prime is 67424087. The reversal of 67424069 is 96042476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58721569 + 8702500 = 7663^2 + 2950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67424069 is a prime.

It is a super-2 number, since 2×67424069² = 9092010161033522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67424009) 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, 33712034 + 33712035.

It is an arithmetic number, because the mean of its divisors is an integer number (33712035).

Almost surely, 2^67424069 is an apocalyptic number.

It is an amenable number.

67424069 is a deficient number, since it is larger than the sum of its proper divisors (1).

67424069 is an equidigital number, since it uses as much as digits as its factorization.

67424069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 67424069 is about 8211.2160487957. The cubic root of 67424069 is about 407.0099122845.

The spelling of 67424069 in words is "sixty-seven million, four hundred twenty-four thousand, sixty-nine".