68638103 has 4 divisors (see below), whose sum is σ = 68770368. Its totient is φ = 68505840.

The previous prime is 68638091. The next prime is 68638109. The reversal of 68638103 is 30183686.

It is a happy number.

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 68638103 - 2¹⁸ = 68375959 is a prime.

It is a super-2 number, since 2×68638103² = 9422378366877218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68638109) 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, 65351 + ... + 66392.

It is an arithmetic number, because the mean of its divisors is an integer number (17192592).

Almost surely, 2^68638103 is an apocalyptic number.

68638103 is a deficient number, since it is larger than the sum of its proper divisors (132265).

68638103 is a wasteful number, since it uses less digits than its factorization.

68638103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132264.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68638103 is about 8284.8115850634. The cubic root of 68638103 is about 409.4382610549.

The spelling of 68638103 in words is "sixty-eight million, six hundred thirty-eight thousand, one hundred three".