68812236 has 18 divisors (see below), whose sum is σ = 173942132. Its totient is φ = 22937400.

The previous prime is 68812217. The next prime is 68812259. The reversal of 68812236 is 63221886.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1911451 = 68812236 / (6 + 8 + 8 + 1 + 2 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 68812236.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 955690 + ... + 955761.

Almost surely, 2^68812236 is an apocalyptic number.

It is an amenable number.

68812236 is an abundant number, since it is smaller than the sum of its proper divisors (105129896).

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

68812236 is a wasteful number, since it uses less digits than its factorization.

68812236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911461 (or 1911456 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 68812236 is about 8295.3140989356. The cubic root of 68812236 is about 409.7842132390.

The spelling of 68812236 in words is "sixty-eight million, eight hundred twelve thousand, two hundred thirty-six".