67644053 has 2 divisors, whose sum is σ = 67644054. Its totient is φ = 67644052.

The previous prime is 67644041. The next prime is 67644067. The reversal of 67644053 is 35044676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43270084 + 24373969 = 6578^2 + 4937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67644053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67644013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33822026 + 33822027.

It is an arithmetic number, because the mean of its divisors is an integer number (33822027).

Almost surely, 2^67644053 is an apocalyptic number.

It is an amenable number.

67644053 is a deficient number, since it is larger than the sum of its proper divisors (1).

67644053 is an equidigital number, since it uses as much as digits as its factorization.

67644053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 67644053 is about 8224.6004766189. The cubic root of 67644053 is about 407.4520811331.

The spelling of 67644053 in words is "sixty-seven million, six hundred forty-four thousand, fifty-three".