68539556 has 6 divisors (see below), whose sum is σ = 119944230. Its totient is φ = 34269776.

The previous prime is 68539519. The next prime is 68539561. The reversal of 68539556 is 65593586.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37625956 + 30913600 = 6134^2 + 5560^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68539556.

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, 8567441 + ... + 8567448.

It is an arithmetic number, because the mean of its divisors is an integer number (19990705).

Almost surely, 2^68539556 is an apocalyptic number.

It is an amenable number.

68539556 is a deficient number, since it is larger than the sum of its proper divisors (51404674).

68539556 is a wasteful number, since it uses less digits than its factorization.

68539556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17134893 (or 17134891 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The square root of 68539556 is about 8278.8619990914. The cubic root of 68539556 is about 409.2422171849.

The spelling of 68539556 in words is "sixty-eight million, five hundred thirty-nine thousand, five hundred fifty-six".