68209541 has 6 divisors (see below), whose sum is σ = 68767110. Its totient is φ = 67656456.

The previous prime is 68209499. The next prime is 68209543. The reversal of 68209541 is 14590286.

It can be written as a sum of positive squares in only one way, i.e., 68145025 + 64516 = 8255^2 + 254^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68209541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68209543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14015 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (11461185).

Almost surely, 2^68209541 is an apocalyptic number.

It is an amenable number.

68209541 is a deficient number, since it is larger than the sum of its proper divisors (557569).

68209541 is an equidigital number, since it uses as much as digits as its factorization.

68209541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 68209541 is about 8258.9067678477. The cubic root of 68209541 is about 408.5843322936.

It can be divided in two parts, 6820 and 9541, that added together give a palindrome (16361).

The spelling of 68209541 in words is "sixty-eight million, two hundred nine thousand, five hundred forty-one".