68684545 has 16 divisors (see below), whose sum is σ = 85200192. Its totient is φ = 53121600.

The previous prime is 68684533. The next prime is 68684569. The reversal of 68684545 is 54548686.

It is not a de Polignac number, because 68684545 - 2⁵ = 68684513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68684495 and 68684504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20134 + ... + 23296.

It is an arithmetic number, because the mean of its divisors is an integer number (5325012).

Almost surely, 2^68684545 is an apocalyptic number.

It is an amenable number.

68684545 is a deficient number, since it is larger than the sum of its proper divisors (16515647).

68684545 is a wasteful number, since it uses less digits than its factorization.

68684545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

The product of its digits is 921600, while the sum is 46.

The square root of 68684545 is about 8287.6139509511. The cubic root of 68684545 is about 409.5305851131.

The spelling of 68684545 in words is "sixty-eight million, six hundred eighty-four thousand, five hundred forty-five".