68512706 has 4 divisors (see below), whose sum is σ = 102769062. Its totient is φ = 34256352.

The previous prime is 68512693. The next prime is 68512723. The reversal of 68512706 is 60721586.

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., 48790225 + 19722481 = 6985^2 + 4441^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17128175 + ... + 17128178.

Almost surely, 2^68512706 is an apocalyptic number.

68512706 is a deficient number, since it is larger than the sum of its proper divisors (34256356).

68512706 is a wasteful number, since it uses less digits than its factorization.

68512706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34256355.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 68512706 is about 8277.2402405633. The cubic root of 68512706 is about 409.1887707308.

The spelling of 68512706 in words is "sixty-eight million, five hundred twelve thousand, seven hundred six".