68357 has 4 divisors (see below), whose sum is σ = 72396. Its totient is φ = 64320.

The previous prime is 68351. The next prime is 68371. The reversal of 68357 is 75386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75386 = 2 ⋅37693.

It can be written as a sum of positive squares in 2 ways, for example, as 25921 + 42436 = 161^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 68357 - 2¹⁴ = 51973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68351) 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, 1994 + ... + 2027.

It is an arithmetic number, because the mean of its divisors is an integer number (18099).

2⁶⁸³⁵⁷ is an apocalyptic number.

It is an amenable number.

68357 is a deficient number, since it is larger than the sum of its proper divisors (4039).

68357 is a wasteful number, since it uses less digits than its factorization.

68357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038.

The product of its digits is 5040, while the sum is 29.

The square root of 68357 is about 261.4517163837. The cubic root of 68357 is about 40.8878553461.

Adding to 68357 its sum of digits (29), we get a palindrome (68386).

The spelling of 68357 in words is "sixty-eight thousand, three hundred fifty-seven".