68072923 has 2 divisors, whose sum is σ = 68072924. Its totient is φ = 68072922.

The previous prime is 68072903. The next prime is 68072959. The reversal of 68072923 is 32927086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68072923 is a prime.

It is not a weakly prime, because it can be changed into another prime (68072903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34036461 + 34036462.

It is an arithmetic number, because the mean of its divisors is an integer number (34036462).

Almost surely, 2^68072923 is an apocalyptic number.

68072923 is a deficient number, since it is larger than the sum of its proper divisors (1).

68072923 is an equidigital number, since it uses as much as digits as its factorization.

68072923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 68072923 is about 8250.6316727872. The cubic root of 68072923 is about 408.3113632309.

It can be divided in two parts, 6807 and 2923, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 68072923 in words is "sixty-eight million, seventy-two thousand, nine hundred twenty-three".