68405141 has 4 divisors (see below), whose sum is σ = 78177312. Its totient is φ = 58632972.

The previous prime is 68405137. The next prime is 68405147. The reversal of 68405141 is 14150486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68405141 - 2² = 68405137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68405147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4886075 + ... + 4886088.

It is an arithmetic number, because the mean of its divisors is an integer number (19544328).

Almost surely, 2^68405141 is an apocalyptic number.

It is an amenable number.

68405141 is a deficient number, since it is larger than the sum of its proper divisors (9772171).

68405141 is an equidigital number, since it uses as much as digits as its factorization.

68405141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772170.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 68405141 is about 8270.7400515311. The cubic root of 68405141 is about 408.9745163391.

The spelling of 68405141 in words is "sixty-eight million, four hundred five thousand, one hundred forty-one".