67381469 has 2 divisors, whose sum is σ = 67381470. Its totient is φ = 67381468.

The previous prime is 67381463. The next prime is 67381487. The reversal of 67381469 is 96418376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60295225 + 7086244 = 7765^2 + 2662^2 .

It is a cyclic number.

It is not a de Polignac number, because 67381469 - 2⁸ = 67381213 is a prime.

It is a super-2 number, since 2×67381469² = 9080524729195922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67381463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33690734 + 33690735.

It is an arithmetic number, because the mean of its divisors is an integer number (33690735).

Almost surely, 2^67381469 is an apocalyptic number.

It is an amenable number.

67381469 is a deficient number, since it is larger than the sum of its proper divisors (1).

67381469 is an equidigital number, since it uses as much as digits as its factorization.

67381469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 67381469 is about 8208.6216260710. The cubic root of 67381469 is about 406.9241749731.

The spelling of 67381469 in words is "sixty-seven million, three hundred eighty-one thousand, four hundred sixty-nine".