68144403 has 8 divisors (see below), whose sum is σ = 93992400. Its totient is φ = 43863008.

The previous prime is 68144389. The next prime is 68144441. The reversal of 68144403 is 30444186.

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 68144403 - 2⁴ = 68144387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68143403) 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 7 ways as a sum of consecutive naturals, for example, 391548 + ... + 391721.

It is an arithmetic number, because the mean of its divisors is an integer number (11749050).

Almost surely, 2^68144403 is an apocalyptic number.

68144403 is a deficient number, since it is larger than the sum of its proper divisors (25847997).

68144403 is a wasteful number, since it uses less digits than its factorization.

68144403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783301.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 68144403 is about 8254.9623257771. The cubic root of 68144403 is about 408.4542290738.

Adding to 68144403 its reverse (30444186), we get a palindrome (98588589).

The spelling of 68144403 in words is "sixty-eight million, one hundred forty-four thousand, four hundred three".