68485864 has 8 divisors (see below), whose sum is σ = 128411010. Its totient is φ = 34242928.

The previous prime is 68485817. The next prime is 68485871. The reversal of 68485864 is 46858486.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 25583364 = 6550^2 + 5058^2 .

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, 4280359 + ... + 4280374.

Almost surely, 2^68485864 is an apocalyptic number.

It is an amenable number.

68485864 is a deficient number, since it is larger than the sum of its proper divisors (59925146).

68485864 is a wasteful number, since it uses less digits than its factorization.

68485864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560739 (or 8560735 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The square root of 68485864 is about 8275.6186475695. The cubic root of 68485864 is about 409.1353262419.

The spelling of 68485864 in words is "sixty-eight million, four hundred eighty-five thousand, eight hundred sixty-four".