68781896 has 8 divisors (see below), whose sum is σ = 128966070. Its totient is φ = 34390944.

The previous prime is 68781871. The next prime is 68781907. The reversal of 68781896 is 69818786.

It can be written as a sum of positive squares in only one way, i.e., 39513796 + 29268100 = 6286^2 + 5410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4298861 + ... + 4298876.

Almost surely, 2^68781896 is an apocalyptic number.

It is an amenable number.

68781896 is a deficient number, since it is larger than the sum of its proper divisors (60184174).

68781896 is a wasteful number, since it uses less digits than its factorization.

68781896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8597743 (or 8597739 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 68781896 is about 8293.4851540230. The cubic root of 68781896 is about 409.7239784055.

The spelling of 68781896 in words is "sixty-eight million, seven hundred eighty-one thousand, eight hundred ninety-six".