68481923 has 2 divisors, whose sum is σ = 68481924. Its totient is φ = 68481922.

The previous prime is 68481913. The next prime is 68481937. The reversal of 68481923 is 32918486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68481923 - 2¹⁰ = 68480899 is a prime.

It is not a weakly prime, because it can be changed into another prime (68481913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34240961 + 34240962.

It is an arithmetic number, because the mean of its divisors is an integer number (34240962).

Almost surely, 2^68481923 is an apocalyptic number.

68481923 is a deficient number, since it is larger than the sum of its proper divisors (1).

68481923 is an equidigital number, since it uses as much as digits as its factorization.

68481923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 68481923 is about 8275.3805350570. The cubic root of 68481923 is about 409.1274782319.

The spelling of 68481923 in words is "sixty-eight million, four hundred eighty-one thousand, nine hundred twenty-three".