68403885 has 32 divisors (see below), whose sum is σ = 121098240. Its totient is φ = 32692800.

The previous prime is 68403883. The next prime is 68403889. The reversal of 68403885 is 58830486.

It is not a de Polignac number, because 68403885 - 2¹ = 68403883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68403883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8796 + ... + 14634.

It is an arithmetic number, because the mean of its divisors is an integer number (3784320).

Almost surely, 2^68403885 is an apocalyptic number.

It is an amenable number.

68403885 is a deficient number, since it is larger than the sum of its proper divisors (52694355).

68403885 is a wasteful number, since it uses less digits than its factorization.

68403885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 68403885 is about 8270.6641208551. The cubic root of 68403885 is about 408.9720132371.

The spelling of 68403885 in words is "sixty-eight million, four hundred three thousand, eight hundred eighty-five".