68947973 has 2 divisors, whose sum is σ = 68947974. Its totient is φ = 68947972.

The previous prime is 68947969. The next prime is 68948003. The reversal of 68947973 is 37974986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45454564 + 23493409 = 6742^2 + 4847^2 .

It is a cyclic number.

It is not a de Polignac number, because 68947973 - 2² = 68947969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68947913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34473986 + 34473987.

It is an arithmetic number, because the mean of its divisors is an integer number (34473987).

Almost surely, 2^68947973 is an apocalyptic number.

It is an amenable number.

68947973 is a deficient number, since it is larger than the sum of its proper divisors (1).

68947973 is an equidigital number, since it uses as much as digits as its factorization.

68947973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The square root of 68947973 is about 8303.4916149774. The cubic root of 68947973 is about 410.0534790443.

The spelling of 68947973 in words is "sixty-eight million, nine hundred forty-seven thousand, nine hundred seventy-three".