68206545 has 24 divisors (see below), whose sum is σ = 128973312. Its totient is φ = 33069600.

The previous prime is 68206543. The next prime is 68206547. The reversal of 68206545 is 54560286.

It is an interprime number because it is at equal distance from previous prime (68206543) and next prime (68206547).

It is not a de Polignac number, because 68206545 - 2¹ = 68206543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68206543) 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 23 ways as a sum of consecutive naturals, for example, 68401 + ... + 69390.

It is an arithmetic number, because the mean of its divisors is an integer number (5373888).

Almost surely, 2^68206545 is an apocalyptic number.

It is an amenable number.

68206545 is a deficient number, since it is larger than the sum of its proper divisors (60766767).

68206545 is a wasteful number, since it uses less digits than its factorization.

68206545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137813 (or 137810 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 68206545 is about 8258.7253859176. The cubic root of 68206545 is about 408.5783500582.

The spelling of 68206545 in words is "sixty-eight million, two hundred six thousand, five hundred forty-five".