68535945 has 48 divisors (see below), whose sum is σ = 126921600. Its totient is φ = 34110720.

The previous prime is 68535941. The next prime is 68535953. The reversal of 68535945 is 54953586.

68535945 is a `hidden beast` number, since 6 + 8 + 53 + 594 + 5 = 666.

It is not a de Polignac number, because 68535945 - 2² = 68535941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68535945.

It is not an unprimeable number, because it can be changed into a prime (68535941) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 60141 + ... + 61269.

It is an arithmetic number, because the mean of its divisors is an integer number (2644200).

Almost surely, 2^68535945 is an apocalyptic number.

It is an amenable number.

68535945 is a deficient number, since it is larger than the sum of its proper divisors (58385655).

68535945 is a wasteful number, since it uses less digits than its factorization.

68535945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1227 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 68535945 is about 8278.6439106897. The cubic root of 68535945 is about 409.2350300962.

The spelling of 68535945 in words is "sixty-eight million, five hundred thirty-five thousand, nine hundred forty-five".