68121503 has 8 divisors (see below), whose sum is σ = 70549248. Its totient is φ = 65732184.

The previous prime is 68121497. The next prime is 68121523. The reversal of 68121503 is 30512186.

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 68121503 - 2⁸ = 68121247 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 (68121523) 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, 5975 + ... + 13112.

It is an arithmetic number, because the mean of its divisors is an integer number (8818656).

Almost surely, 2^68121503 is an apocalyptic number.

68121503 is a deficient number, since it is larger than the sum of its proper divisors (2427745).

68121503 is a wasteful number, since it uses less digits than its factorization.

68121503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19213.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 68121503 is about 8253.5751647392. The cubic root of 68121503 is about 408.4084701199.

Adding to 68121503 its reverse (30512186), we get a palindrome (98633689).

The spelling of 68121503 in words is "sixty-eight million, one hundred twenty-one thousand, five hundred three".