68511703 has 4 divisors (see below), whose sum is σ = 73781848. Its totient is φ = 63241560.

The previous prime is 68511689. The next prime is 68511731. The reversal of 68511703 is 30711586.

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

It is a cyclic number.

It is not a de Polignac number, because 68511703 - 2²⁵ = 34957271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68511103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635053 + ... + 2635078.

It is an arithmetic number, because the mean of its divisors is an integer number (18445462).

Almost surely, 2^68511703 is an apocalyptic number.

68511703 is a deficient number, since it is larger than the sum of its proper divisors (5270145).

68511703 is a wasteful number, since it uses less digits than its factorization.

68511703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270144.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 68511703 is about 8277.1796525145. The cubic root of 68511703 is about 409.1867739317.

The spelling of 68511703 in words is "sixty-eight million, five hundred eleven thousand, seven hundred three".