68904373 has 2 divisors, whose sum is σ = 68904374. Its totient is φ = 68904372.

The previous prime is 68904307. The next prime is 68904421. The reversal of 68904373 is 37340986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64995844 + 3908529 = 8062^2 + 1977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68904373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68902373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34452186 + 34452187.

It is an arithmetic number, because the mean of its divisors is an integer number (34452187).

Almost surely, 2^68904373 is an apocalyptic number.

It is an amenable number.

68904373 is a deficient number, since it is larger than the sum of its proper divisors (1).

68904373 is an equidigital number, since it uses as much as digits as its factorization.

68904373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 68904373 is about 8300.8657982165. The cubic root of 68904373 is about 409.9670268942.

The spelling of 68904373 in words is "sixty-eight million, nine hundred four thousand, three hundred seventy-three".