68000545 has 4 divisors (see below), whose sum is σ = 81600660. Its totient is φ = 54400432.

The previous prime is 68000531. The next prime is 68000567. The reversal of 68000545 is 54500086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54500086 = 2 ⋅27250043.

It can be written as a sum of positive squares in 2 ways, for example, as 44195904 + 23804641 = 6648^2 + 4879^2 .

It is a cyclic number.

It is not a de Polignac number, because 68000545 - 2⁷ = 68000417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800050 + ... + 6800059.

It is an arithmetic number, because the mean of its divisors is an integer number (20400165).

Almost surely, 2^68000545 is an apocalyptic number.

It is an amenable number.

68000545 is a deficient number, since it is larger than the sum of its proper divisors (13600115).

68000545 is a wasteful number, since it uses less digits than its factorization.

68000545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13600114.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 68000545 is about 8246.2442966480. The cubic root of 68000545 is about 408.1666006310.

The spelling of 68000545 in words is "sixty-eight million, five hundred forty-five", and thus it is an aban number.