67803421 has 16 divisors (see below), whose sum is σ = 80979840. Its totient is φ = 55540800.

The previous prime is 67803413. The next prime is 67803427. The reversal of 67803421 is 12430876.

It is not a de Polignac number, because 67803421 - 2³ = 67803413 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 (67803427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18850 + ... + 22156.

It is an arithmetic number, because the mean of its divisors is an integer number (5061240).

Almost surely, 2^67803421 is an apocalyptic number.

It is an amenable number.

67803421 is a deficient number, since it is larger than the sum of its proper divisors (13176419).

67803421 is a wasteful number, since it uses less digits than its factorization.

67803421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 67803421 is about 8234.2832717851. The cubic root of 67803421 is about 407.7718130829.

It can be divided in two parts, 6780 and 3421, that added together give a palindrome (10201).

The spelling of 67803421 in words is "sixty-seven million, eight hundred three thousand, four hundred twenty-one".