68203963 has 4 divisors (see below), whose sum is σ = 68307808. Its totient is φ = 68100120.

The previous prime is 68203957. The next prime is 68203991. The reversal of 68203963 is 36930286.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36930286 = 2 ⋅18465143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68203963 is a prime.

It is a super-3 number, since 3×68203963³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68207963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50931 + ... + 52252.

It is an arithmetic number, because the mean of its divisors is an integer number (17076952).

Almost surely, 2^68203963 is an apocalyptic number.

68203963 is a deficient number, since it is larger than the sum of its proper divisors (103845).

68203963 is a wasteful number, since it uses less digits than its factorization.

68203963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103844.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 68203963 is about 8258.5690649168. The cubic root of 68203963 is about 408.5731943330.

The spelling of 68203963 in words is "sixty-eight million, two hundred three thousand, nine hundred sixty-three".