68541331 has 4 divisors (see below), whose sum is σ = 72573192. Its totient is φ = 64509472.

The previous prime is 68541329. The next prime is 68541359. The reversal of 68541331 is 13314586.

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

It is a cyclic number.

It is not a de Polignac number, because 68541331 - 2¹ = 68541329 is a prime.

It is a super-2 number, since 2×68541331² = 9395828110503122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68541293 and 68541302.

It is not an unprimeable number, because it can be changed into a prime (68541391) 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, 2015905 + ... + 2015938.

It is an arithmetic number, because the mean of its divisors is an integer number (18143298).

Almost surely, 2^68541331 is an apocalyptic number.

68541331 is a deficient number, since it is larger than the sum of its proper divisors (4031861).

68541331 is a wasteful number, since it uses less digits than its factorization.

68541331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031860.

The product of its digits is 8640, while the sum is 31.

The square root of 68541331 is about 8278.9691991213. The cubic root of 68541331 is about 409.2457499316.

The spelling of 68541331 in words is "sixty-eight million, five hundred forty-one thousand, three hundred thirty-one".