68143892 has 12 divisors (see below), whose sum is σ = 120433236. Its totient is φ = 33734400.

The previous prime is 68143813. The next prime is 68143897. The reversal of 68143892 is 29834186.

It can be written as a sum of positive squares in 2 ways, for example, as 65060356 + 3083536 = 8066^2 + 1756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68143897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83933 + ... + 84740.

It is an arithmetic number, because the mean of its divisors is an integer number (10036103).

Almost surely, 2^68143892 is an apocalyptic number.

It is an amenable number.

68143892 is a deficient number, since it is larger than the sum of its proper divisors (52289344).

68143892 is a wasteful number, since it uses less digits than its factorization.

68143892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168778 (or 168776 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 68143892 is about 8254.9313746390. The cubic root of 68143892 is about 408.4532081016.

The spelling of 68143892 in words is "sixty-eight million, one hundred forty-three thousand, eight hundred ninety-two".