68873641 has 2 divisors, whose sum is σ = 68873642. Its totient is φ = 68873640.

The previous prime is 68873633. The next prime is 68873663. The reversal of 68873641 is 14637886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 15642025 = 7296^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 68873641 - 2³ = 68873633 is a prime.

It is not a weakly prime, because it can be changed into another prime (68873671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34436820 + 34436821.

It is an arithmetic number, because the mean of its divisors is an integer number (34436821).

Almost surely, 2^68873641 is an apocalyptic number.

It is an amenable number.

68873641 is a deficient number, since it is larger than the sum of its proper divisors (1).

68873641 is an equidigital number, since it uses as much as digits as its factorization.

68873641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 68873641 is about 8299.0144595608. The cubic root of 68873641 is about 409.9060681108.

The spelling of 68873641 in words is "sixty-eight million, eight hundred seventy-three thousand, six hundred forty-one".