68836 has 6 divisors (see below), whose sum is σ = 120470. Its totient is φ = 34416.

The previous prime is 68821. The next prime is 68863. The reversal of 68836 is 63886.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 11236 = 240^2 + 106^2 .

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 68798 and 68807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8601 + ... + 8608.

2⁶⁸⁸³⁶ is an apocalyptic number.

It is an amenable number.

68836 is a deficient number, since it is larger than the sum of its proper divisors (51634).

68836 is a wasteful number, since it uses less digits than its factorization.

68836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213 (or 17211 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 68836 is about 262.3661563541. The cubic root of 68836 is about 40.9831380196.

Subtracting from 68836 its reverse (63886), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 6883 and 6, that added together give a square (6889 = 83²).

The spelling of 68836 in words is "sixty-eight thousand, eight hundred thirty-six".