68547313 has 4 divisors (see below), whose sum is σ = 68766628. Its totient is φ = 68328000.

The previous prime is 68547287. The next prime is 68547317. The reversal of 68547313 is 31374586.

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 1192464 + 67354849 = 1092^2 + 8207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68547313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68547317) 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, 109188 + ... + 109813.

It is an arithmetic number, because the mean of its divisors is an integer number (17191657).

Almost surely, 2^68547313 is an apocalyptic number.

It is an amenable number.

68547313 is a deficient number, since it is larger than the sum of its proper divisors (219315).

68547313 is a wasteful number, since it uses less digits than its factorization.

68547313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219314.

The product of its digits is 60480, while the sum is 37.

The square root of 68547313 is about 8279.3304680995. The cubic root of 68547313 is about 409.2576553363.

The spelling of 68547313 in words is "sixty-eight million, five hundred forty-seven thousand, three hundred thirteen".