68998568 has 8 divisors (see below), whose sum is σ = 129372330. Its totient is φ = 34499280.

The previous prime is 68998561. The next prime is 68998577. The reversal of 68998568 is 86589986.

It can be written as a sum of positive squares in only one way, i.e., 68591524 + 407044 = 8282^2 + 638^2 .

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 (68998561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4312403 + ... + 4312418.

Almost surely, 2^68998568 is an apocalyptic number.

It is an amenable number.

68998568 is a deficient number, since it is larger than the sum of its proper divisors (60373762).

68998568 is a wasteful number, since it uses less digits than its factorization.

68998568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8624827 (or 8624823 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 59.

The square root of 68998568 is about 8306.5376662000. The cubic root of 68998568 is about 410.1537555388.

The spelling of 68998568 in words is "sixty-eight million, nine hundred ninety-eight thousand, five hundred sixty-eight".