68538312 has 40 divisors (see below), whose sum is σ = 191972550. Its totient is φ = 22845888.

The previous prime is 68538307. The next prime is 68538331. The reversal of 68538312 is 21383586.

It can be written as a sum of positive squares in only one way, i.e., 36796356 + 31741956 = 6066^2 + 5634^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52237 + ... + 53532.

Almost surely, 2^68538312 is an apocalyptic number.

It is an amenable number.

68538312 is an abundant number, since it is smaller than the sum of its proper divisors (123434238).

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

68538312 is a wasteful number, since it uses less digits than its factorization.

68538312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105787 (or 105774 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 68538312 is about 8278.7868676516. The cubic root of 68538312 is about 409.2397412405.

The spelling of 68538312 in words is "sixty-eight million, five hundred thirty-eight thousand, three hundred twelve".