68668903 has 4 divisors (see below), whose sum is σ = 69693880. Its totient is φ = 67643928.

The previous prime is 68668883. The next prime is 68668913. The reversal of 68668903 is 30986686.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68668903 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 (68668913) 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, 512388 + ... + 512521.

It is an arithmetic number, because the mean of its divisors is an integer number (17423470).

Almost surely, 2^68668903 is an apocalyptic number.

68668903 is a deficient number, since it is larger than the sum of its proper divisors (1024977).

68668903 is a wasteful number, since it uses less digits than its factorization.

68668903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024976.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 68668903 is about 8286.6701997847. The cubic root of 68668903 is about 409.4994943548.

The spelling of 68668903 in words is "sixty-eight million, six hundred sixty-eight thousand, nine hundred three".