68441845 has 8 divisors (see below), whose sum is σ = 82179000. Its totient is φ = 54720960.

The previous prime is 68441843. The next prime is 68441851. The reversal of 68441845 is 54814486.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 58844241 = 3098^2 + 7671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68441845 - 2¹ = 68441843 is a prime.

It is a super-2 number, since 2×68441845² = 9368572294008050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68441798 and 68441807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68441843) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9031 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (10272375).

Almost surely, 2^68441845 is an apocalyptic number.

It is an amenable number.

68441845 is a deficient number, since it is larger than the sum of its proper divisors (13737155).

68441845 is a wasteful number, since it uses less digits than its factorization.

68441845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its digits is 122880, while the sum is 40.

The square root of 68441845 is about 8272.9586606002. The cubic root of 68441845 is about 409.0476507869.

The spelling of 68441845 in words is "sixty-eight million, four hundred forty-one thousand, eight hundred forty-five".