68531941 has 4 divisors (see below), whose sum is σ = 68573484. Its totient is φ = 68490400.

The previous prime is 68531929. The next prime is 68531963. The reversal of 68531941 is 14913586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48011041 + 20520900 = 6929^2 + 4530^2 .

It is a cyclic number.

It is not a de Polignac number, because 68531941 - 2⁵ = 68531909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68531941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68531971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18190 + ... + 21631.

It is an arithmetic number, because the mean of its divisors is an integer number (17143371).

Almost surely, 2^68531941 is an apocalyptic number.

It is an amenable number.

68531941 is a deficient number, since it is larger than the sum of its proper divisors (41543).

68531941 is a wasteful number, since it uses less digits than its factorization.

68531941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41542.

The product of its digits is 25920, while the sum is 37.

The square root of 68531941 is about 8278.4020801118. The cubic root of 68531941 is about 409.2270605119.

The spelling of 68531941 in words is "sixty-eight million, five hundred thirty-one thousand, nine hundred forty-one".