68102564 has 6 divisors (see below), whose sum is σ = 119179494. Its totient is φ = 34051280.

The previous prime is 68102549. The next prime is 68102569. The reversal of 68102564 is 46520186.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 369664 = 8230^2 + 608^2 .

68102564 is a modest number, since divided by 102564 gives 68 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 68102564.

It is not an unprimeable number, because it can be changed into a prime (68102569) by changing a digit.

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, 8512817 + ... + 8512824.

It is an arithmetic number, because the mean of its divisors is an integer number (19863249).

Almost surely, 2^68102564 is an apocalyptic number.

It is an amenable number.

68102564 is a deficient number, since it is larger than the sum of its proper divisors (51076930).

68102564 is a wasteful number, since it uses less digits than its factorization.

68102564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17025645 (or 17025643 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 68102564 is about 8252.4277639977. The cubic root of 68102564 is about 408.3706183178.

The spelling of 68102564 in words is "sixty-eight million, one hundred two thousand, five hundred sixty-four".