68406545 has 8 divisors (see below), whose sum is σ = 82180224. Its totient is φ = 54663664.

The previous prime is 68406529. The next prime is 68406551. The reversal of 68406545 is 54560486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68406545 - 2⁴ = 68406529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68406499 and 68406508.

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 7 ways as a sum of consecutive naturals, for example, 2489 + ... + 11958.

It is an arithmetic number, because the mean of its divisors is an integer number (10272528).

Almost surely, 2^68406545 is an apocalyptic number.

It is an amenable number.

68406545 is a deficient number, since it is larger than the sum of its proper divisors (13773679).

68406545 is a wasteful number, since it uses less digits than its factorization.

68406545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15399.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 68406545 is about 8270.8249286271. The cubic root of 68406545 is about 408.9773143564.

The spelling of 68406545 in words is "sixty-eight million, four hundred six thousand, five hundred forty-five".