68636 has 6 divisors (see below), whose sum is σ = 120120. Its totient is φ = 34316.

The previous prime is 68633. The next prime is 68639. The reversal of 68636 is 63686.

It is an interprime number because it is at equal distance from previous prime (68633) and next prime (68639).

It is a pancake number, because a pancake can be divided into 68636 parts by 370 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 68599 and 68608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8576 + ... + 8583.

It is an arithmetic number, because the mean of its divisors is an integer number (20020).

2⁶⁸⁶³⁶ is an apocalyptic number.

It is an amenable number.

68636 is a deficient number, since it is larger than the sum of its proper divisors (51484).

68636 is a wasteful number, since it uses less digits than its factorization.

68636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17163 (or 17161 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 68636 is about 261.9847323796. The cubic root of 68636 is about 40.9434079425.

Subtracting from 68636 its reverse (63686), we obtain a triangular number (4950 = T₉₉).

The spelling of 68636 in words is "sixty-eight thousand, six hundred thirty-six".