68543313 has 8 divisors (see below), whose sum is σ = 91939008. Its totient is φ = 45421584.

The previous prime is 68543291. The next prime is 68543339. The reversal of 68543313 is 31334586.

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

It is a de Polignac number, because none of the positive numbers 2^k-68543313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68543353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67906 + ... + 68907.

It is an arithmetic number, because the mean of its divisors is an integer number (11492376).

Almost surely, 2^68543313 is an apocalyptic number.

It is an amenable number.

68543313 is a deficient number, since it is larger than the sum of its proper divisors (23395695).

68543313 is a wasteful number, since it uses less digits than its factorization.

68543313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136983.

The product of its digits is 25920, while the sum is 33.

The square root of 68543313 is about 8279.0888991483. The cubic root of 68543313 is about 409.2496945941.

Adding to 68543313 its reverse (31334586), we get a palindrome (99877899).

The spelling of 68543313 in words is "sixty-eight million, five hundred forty-three thousand, three hundred thirteen".