68773843 has 2 divisors, whose sum is σ = 68773844. Its totient is φ = 68773842.

The previous prime is 68773799. The next prime is 68773867. The reversal of 68773843 is 34837786.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68773843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68773793 and 68773802.

It is not a weakly prime, because it can be changed into another prime (66773843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34386921 + 34386922.

It is an arithmetic number, because the mean of its divisors is an integer number (34386922).

Almost surely, 2^68773843 is an apocalyptic number.

68773843 is a deficient number, since it is larger than the sum of its proper divisors (1).

68773843 is an equidigital number, since it uses as much as digits as its factorization.

68773843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 46.

The square root of 68773843 is about 8292.9996382491. Note that the first 3 decimals coincide. The cubic root of 68773843 is about 409.7079875893.

The spelling of 68773843 in words is "sixty-eight million, seven hundred seventy-three thousand, eight hundred forty-three".