68312072 has 16 divisors (see below), whose sum is σ = 129330240. Its totient is φ = 33824016.

The previous prime is 68312063. The next prime is 68312077. The reversal of 68312072 is 27021386.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68312077) 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, 40628 + ... + 42275.

It is an arithmetic number, because the mean of its divisors is an integer number (8083140).

Almost surely, 2^68312072 is an apocalyptic number.

It is an amenable number.

68312072 is a deficient number, since it is larger than the sum of its proper divisors (61018168).

68312072 is a wasteful number, since it uses less digits than its factorization.

68312072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83012 (or 83008 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 68312072 is about 8265.1117354819. Note that the first 3 decimals coincide. The cubic root of 68312072 is about 408.7889546305.

The spelling of 68312072 in words is "sixty-eight million, three hundred twelve thousand, seventy-two".