68387445 has 48 divisors (see below), whose sum is σ = 136805760. Its totient is φ = 30955392.

The previous prime is 68387401. The next prime is 68387461. The reversal of 68387445 is 54478386.

It is not a de Polignac number, because 68387445 - 2⁶ = 68387381 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 68387445.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 32691 + ... + 34719.

It is an arithmetic number, because the mean of its divisors is an integer number (2850120).

Almost surely, 2^68387445 is an apocalyptic number.

It is an amenable number.

68387445 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

68387445 is a wasteful number, since it uses less digits than its factorization.

68387445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154 (or 2151 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 68387445 is about 8269.6701868938. The cubic root of 68387445 is about 408.9392468789.

The spelling of 68387445 in words is "sixty-eight million, three hundred eighty-seven thousand, four hundred forty-five".