68905736 has 16 divisors (see below), whose sum is σ = 129311100. Its totient is φ = 34422784.

The previous prime is 68905721. The next prime is 68905741. The reversal of 68905736 is 63750986.

It can be written as a sum of positive squares in 2 ways, for example, as 62504836 + 6400900 = 7906^2 + 2530^2 .

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 3 ways as a sum of consecutive naturals, for example, 8216 + ... + 14328.

Almost surely, 2^68905736 is an apocalyptic number.

It is an amenable number.

68905736 is a deficient number, since it is larger than the sum of its proper divisors (60405364).

68905736 is a wasteful number, since it uses less digits than its factorization.

68905736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7528 (or 7524 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 68905736 is about 8300.9478976801. The cubic root of 68905736 is about 409.9697300675.

The spelling of 68905736 in words is "sixty-eight million, nine hundred five thousand, seven hundred thirty-six".