67453381 has 2 divisors, whose sum is σ = 67453382. Its totient is φ = 67453380.

The previous prime is 67453357. The next prime is 67453403. The reversal of 67453381 is 18335476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 21077281 = 6810^2 + 4591^2 .

It is a cyclic number.

It is not a de Polignac number, because 67453381 - 2²¹ = 65356229 is a prime.

It is a super-2 number, since 2×67453381² = 9099917216662322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67453381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67453481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33726690 + 33726691.

It is an arithmetic number, because the mean of its divisors is an integer number (33726691).

Almost surely, 2^67453381 is an apocalyptic number.

It is an amenable number.

67453381 is a deficient number, since it is larger than the sum of its proper divisors (1).

67453381 is an equidigital number, since it uses as much as digits as its factorization.

67453381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 67453381 is about 8213.0007305491. Note that the first 3 decimals coincide. The cubic root of 67453381 is about 407.0688850237.

The spelling of 67453381 in words is "sixty-seven million, four hundred fifty-three thousand, three hundred eighty-one".