68347845 has 24 divisors (see below), whose sum is σ = 124706400. Its totient is φ = 34533216.

The previous prime is 68347819. The next prime is 68347879. The reversal of 68347845 is 54874386.

It is not a de Polignac number, because 68347845 - 2⁶ = 68347781 is a prime.

It is a super-2 number, since 2×68347845² = 9342855832288050, which contains 22 as substring.

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 68347845.

It is a congruent number.

It is an unprimeable number.

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, 39115 + ... + 40824.

It is an arithmetic number, because the mean of its divisors is an integer number (5196100).

Almost surely, 2^68347845 is an apocalyptic number.

It is an amenable number.

68347845 is a deficient number, since it is larger than the sum of its proper divisors (56358555).

68347845 is a wasteful number, since it uses less digits than its factorization.

68347845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79969 (or 79966 counting only the distinct ones).

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

The square root of 68347845 is about 8267.2755488129. The cubic root of 68347845 is about 408.8602990500.

The spelling of 68347845 in words is "sixty-eight million, three hundred forty-seven thousand, eight hundred forty-five".