68657903 has 8 divisors (see below), whose sum is σ = 72234960. Its totient is φ = 65171520.

The previous prime is 68657867. The next prime is 68657933. The reversal of 68657903 is 30975686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68657903 - 2¹⁸ = 68395759 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 (68657933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21113 + ... + 24146.

It is an arithmetic number, because the mean of its divisors is an integer number (9029370).

Almost surely, 2^68657903 is an apocalyptic number.

68657903 is a deficient number, since it is larger than the sum of its proper divisors (3577057).

68657903 is a wasteful number, since it uses less digits than its factorization.

68657903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45337.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 68657903 is about 8286.0064566714. The cubic root of 68657903 is about 409.4776274214.

The spelling of 68657903 in words is "sixty-eight million, six hundred fifty-seven thousand, nine hundred three".