68187412 has 18 divisors (see below), whose sum is σ = 121936682. Its totient is φ = 33363984.

The previous prime is 68187407. The next prime is 68187419. The reversal of 68187412 is 21478186.

It can be written as a sum of positive squares in only one way, i.e., 57972996 + 10214416 = 7614^2 + 3196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68187419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4978 + ... + 12694.

Almost surely, 2^68187412 is an apocalyptic number.

It is an amenable number.

68187412 is a deficient number, since it is larger than the sum of its proper divisors (53749270).

68187412 is a wasteful number, since it uses less digits than its factorization.

68187412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815 (or 7766 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 68187412 is about 8257.5669540125. The cubic root of 68187412 is about 408.5401422848.

The spelling of 68187412 in words is "sixty-eight million, one hundred eighty-seven thousand, four hundred twelve".