68457005 has 4 divisors (see below), whose sum is σ = 82148412. Its totient is φ = 54765600.

The previous prime is 68457001. The next prime is 68457041. The reversal of 68457005 is 50075486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50075486 = 2 ⋅25037743.

It can be written as a sum of positive squares in 2 ways, for example, as 39866596 + 28590409 = 6314^2 + 5347^2 .

It is not a de Polignac number, because 68457005 - 2² = 68457001 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 (68457001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6845696 + ... + 6845705.

It is an arithmetic number, because the mean of its divisors is an integer number (20537103).

Almost surely, 2^68457005 is an apocalyptic number.

It is an amenable number.

68457005 is a deficient number, since it is larger than the sum of its proper divisors (13691407).

68457005 is a wasteful number, since it uses less digits than its factorization.

68457005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13691406.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 68457005 is about 8273.8748479778. The cubic root of 68457005 is about 409.0778501705.

The spelling of 68457005 in words is "sixty-eight million, four hundred fifty-seven thousand, five".