68787223 has 4 divisors (see below), whose sum is σ = 68805880. Its totient is φ = 68768568.

The previous prime is 68787209. The next prime is 68787241. The reversal of 68787223 is 32278786.

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 68787223 - 2¹⁷ = 68656151 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 68787223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68787263) 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, 1740 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (17201470).

Almost surely, 2^68787223 is an apocalyptic number.

68787223 is a deficient number, since it is larger than the sum of its proper divisors (18657).

68787223 is a wasteful number, since it uses less digits than its factorization.

68787223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18656.

The product of its digits is 225792, while the sum is 43.

The square root of 68787223 is about 8293.8063035014. The cubic root of 68787223 is about 409.7345555264.

The spelling of 68787223 in words is "sixty-eight million, seven hundred eighty-seven thousand, two hundred twenty-three".