68609743 has 4 divisors (see below), whose sum is σ = 69772680. Its totient is φ = 67446808.

The previous prime is 68609731. The next prime is 68609747. The reversal of 68609743 is 34790686.

It is a happy number.

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 68609743 - 2⁵ = 68609711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68609743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68609747) 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, 581380 + ... + 581497.

It is an arithmetic number, because the mean of its divisors is an integer number (17443170).

Almost surely, 2^68609743 is an apocalyptic number.

68609743 is a deficient number, since it is larger than the sum of its proper divisors (1162937).

68609743 is a wasteful number, since it uses less digits than its factorization.

68609743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162936.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 68609743 is about 8283.0998424503. The cubic root of 68609743 is about 409.3818625037.

The spelling of 68609743 in words is "sixty-eight million, six hundred nine thousand, seven hundred forty-three".