68668552 has 8 divisors (see below), whose sum is σ = 128753550. Its totient is φ = 34334272.

The previous prime is 68668543. The next prime is 68668571. The reversal of 68668552 is 25586686.

It can be written as a sum of positive squares in only one way, i.e., 52620516 + 16048036 = 7254^2 + 4006^2 .

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

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4291777 + ... + 4291792.

Almost surely, 2^68668552 is an apocalyptic number.

It is an amenable number.

68668552 is a deficient number, since it is larger than the sum of its proper divisors (60084998).

68668552 is a wasteful number, since it uses less digits than its factorization.

68668552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8583575 (or 8583571 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 68668552 is about 8286.6490211665. The cubic root of 68668552 is about 409.4987966369.

The spelling of 68668552 in words is "sixty-eight million, six hundred sixty-eight thousand, five hundred fifty-two".