68638303 has 4 divisors (see below), whose sum is σ = 68672560. Its totient is φ = 68604048.

The previous prime is 68638301. The next prime is 68638307. The reversal of 68638303 is 30383686.

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 68638303 - 2¹ = 68638301 is a prime.

It is a super-2 number, since 2×68638303² = 9422433277439618, 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 (68638301) 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, 13923 + ... + 18196.

It is an arithmetic number, because the mean of its divisors is an integer number (17168140).

Almost surely, 2^68638303 is an apocalyptic number.

68638303 is a deficient number, since it is larger than the sum of its proper divisors (34257).

68638303 is a wasteful number, since it uses less digits than its factorization.

68638303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34256.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 68638303 is about 8284.8236553351. The cubic root of 68638303 is about 409.4386587328.

The spelling of 68638303 in words is "sixty-eight million, six hundred thirty-eight thousand, three hundred three".