68842706 has 4 divisors (see below), whose sum is σ = 103264062. Its totient is φ = 34421352.

The previous prime is 68842691. The next prime is 68842717. The reversal of 68842706 is 60724886.

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., 61230625 + 7612081 = 7825^2 + 2759^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17210675 + ... + 17210678.

Almost surely, 2^68842706 is an apocalyptic number.

68842706 is a deficient number, since it is larger than the sum of its proper divisors (34421356).

68842706 is a wasteful number, since it uses less digits than its factorization.

68842706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34421355.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 68842706 is about 8297.1504747112. The cubic root of 68842706 is about 409.8446883483.

The spelling of 68842706 in words is "sixty-eight million, eight hundred forty-two thousand, seven hundred six".