68661236 has 24 divisors (see below), whose sum is σ = 137497920. Its totient is φ = 29388672.

The previous prime is 68661227. The next prime is 68661251. The reversal of 68661236 is 63216686.

It is a self number, because there is not a number n which added to its sum of digits gives 68661236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42695 + ... + 44273.

It is an arithmetic number, because the mean of its divisors is an integer number (5729080).

Almost surely, 2^68661236 is an apocalyptic number.

It is an amenable number.

68661236 is an abundant number, since it is smaller than the sum of its proper divisors (68836684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68661236 is a wasteful number, since it uses less digits than its factorization.

68661236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 3141 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 68661236 is about 8286.2075764490. The cubic root of 68661236 is about 409.4842533488.

The spelling of 68661236 in words is "sixty-eight million, six hundred sixty-one thousand, two hundred thirty-six".