68400743 has 2 divisors, whose sum is σ = 68400744. Its totient is φ = 68400742.

The previous prime is 68400727. The next prime is 68400767. The reversal of 68400743 is 34700486.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68400743 - 2⁴ = 68400727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68402743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34200371 + 34200372.

It is an arithmetic number, because the mean of its divisors is an integer number (34200372).

Almost surely, 2^68400743 is an apocalyptic number.

68400743 is a deficient number, since it is larger than the sum of its proper divisors (1).

68400743 is an equidigital number, since it uses as much as digits as its factorization.

68400743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 68400743 is about 8270.4741702033. The cubic root of 68400743 is about 408.9657513621.

The spelling of 68400743 in words is "sixty-eight million, four hundred thousand, seven hundred forty-three".