68072308 has 6 divisors (see below), whose sum is σ = 119126546. Its totient is φ = 34036152.

The previous prime is 68072287. The next prime is 68072321. The reversal of 68072308 is 80327086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 16548624 = 7178^2 + 4068^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 8509035 + ... + 8509042.

Almost surely, 2^68072308 is an apocalyptic number.

It is an amenable number.

68072308 is a deficient number, since it is larger than the sum of its proper divisors (51054238).

68072308 is a wasteful number, since it uses less digits than its factorization.

68072308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17018081 (or 17018079 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68072308 is about 8250.5944028294. The cubic root of 68072308 is about 408.3101336072.

The spelling of 68072308 in words is "sixty-eight million, seventy-two thousand, three hundred eight".