68805706 has 4 divisors (see below), whose sum is σ = 103208562. Its totient is φ = 34402852.

The previous prime is 68805703. The next prime is 68805727. The reversal of 68805706 is 60750886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 65025 = 8291^2 + 255^2 .

It is not an unprimeable number, because it can be changed into a prime (68805703) 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, 17201425 + ... + 17201428.

Almost surely, 2^68805706 is an apocalyptic number.

68805706 is a deficient number, since it is larger than the sum of its proper divisors (34402856).

68805706 is a wasteful number, since it uses less digits than its factorization.

68805706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34402855.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 68805706 is about 8294.9204938926. The cubic root of 68805706 is about 409.7712505465.

The spelling of 68805706 in words is "sixty-eight million, eight hundred five thousand, seven hundred six".