68838516 has 36 divisors (see below), whose sum is σ = 174371652. Its totient is φ = 22898304.

The previous prime is 68838509. The next prime is 68838529. The reversal of 68838516 is 61583886.

It can be written as a sum of positive squares in 2 ways, for example, as 13395600 + 55442916 = 3660^2 + 7446^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 18336 + ... + 21768.

It is an arithmetic number, because the mean of its divisors is an integer number (4843657).

Almost surely, 2^68838516 is an apocalyptic number.

It is an amenable number.

68838516 is an abundant number, since it is smaller than the sum of its proper divisors (105533136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68838516 is a wasteful number, since it uses less digits than its factorization.

68838516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000 (or 3995 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 68838516 is about 8296.8979745445. The cubic root of 68838516 is about 409.8363733348.

It can be divided in two parts, 688 and 38516, that added together give a square (39204 = 198²).

The spelling of 68838516 in words is "sixty-eight million, eight hundred thirty-eight thousand, five hundred sixteen".