68881453 has 2 divisors, whose sum is σ = 68881454. Its totient is φ = 68881452.

The previous prime is 68881447. The next prime is 68881471. The reversal of 68881453 is 35418886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68856804 + 24649 = 8298^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 68881453 - 2¹³ = 68873261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68881493) 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, 34440726 + 34440727.

It is an arithmetic number, because the mean of its divisors is an integer number (34440727).

Almost surely, 2^68881453 is an apocalyptic number.

It is an amenable number.

68881453 is a deficient number, since it is larger than the sum of its proper divisors (1).

68881453 is an equidigital number, since it uses as much as digits as its factorization.

68881453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 43.

The square root of 68881453 is about 8299.4851045110. The cubic root of 68881453 is about 409.9215654046.

The spelling of 68881453 in words is "sixty-eight million, eight hundred eighty-one thousand, four hundred fifty-three".