68203187 has 4 divisors (see below), whose sum is σ = 73449600. Its totient is φ = 62956776.

The previous prime is 68203171. The next prime is 68203189. The reversal of 68203187 is 78130286.

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 68203187 - 2⁴ = 68203171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68203189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623187 + ... + 2623212.

It is an arithmetic number, because the mean of its divisors is an integer number (18362400).

Almost surely, 2^68203187 is an apocalyptic number.

68203187 is a deficient number, since it is larger than the sum of its proper divisors (5246413).

68203187 is a wasteful number, since it uses less digits than its factorization.

68203187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246412.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 68203187 is about 8258.5220832786. The cubic root of 68203187 is about 408.5716447945.

The spelling of 68203187 in words is "sixty-eight million, two hundred three thousand, one hundred eighty-seven".