68768872 has 8 divisors (see below), whose sum is σ = 128941650. Its totient is φ = 34384432.

The previous prime is 68768857. The next prime is 68768879. The reversal of 68768872 is 27886786.

It can be written as a sum of positive squares in only one way, i.e., 67010596 + 1758276 = 8186^2 + 1326^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68768879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4298047 + ... + 4298062.

Almost surely, 2^68768872 is an apocalyptic number.

It is an amenable number.

68768872 is a deficient number, since it is larger than the sum of its proper divisors (60172778).

68768872 is a wasteful number, since it uses less digits than its factorization.

68768872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8596115 (or 8596111 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 68768872 is about 8292.6999222207. The cubic root of 68768872 is about 409.6981160674.

The spelling of 68768872 in words is "sixty-eight million, seven hundred sixty-eight thousand, eight hundred seventy-two".