68812812 has 18 divisors (see below), whose sum is σ = 173943588. Its totient is φ = 22937592.

The previous prime is 68812769. The next prime is 68812823. The reversal of 68812812 is 21821886.

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: 1911467 = 68812812 / (6 + 8 + 8 + 1 + 2 + 8 + 1 + 2).

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, 955698 + ... + 955769.

Almost surely, 2^68812812 is an apocalyptic number.

It is an amenable number.

68812812 is an abundant number, since it is smaller than the sum of its proper divisors (105130776).

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

68812812 is a wasteful number, since it uses less digits than its factorization.

68812812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911477 (or 1911472 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 68812812 is about 8295.3488172590. The cubic root of 68812812 is about 409.7853566163.

The spelling of 68812812 in words is "sixty-eight million, eight hundred twelve thousand, eight hundred twelve".