67421359 has 4 divisors (see below), whose sum is σ = 68855904. Its totient is φ = 65986816.

The previous prime is 67421323. The next prime is 67421369. The reversal of 67421359 is 95312476.

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 67421359 - 2¹³ = 67413167 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 (67421309) 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 3 ways as a sum of consecutive naturals, for example, 717202 + ... + 717295.

It is an arithmetic number, because the mean of its divisors is an integer number (17213976).

Almost surely, 2^67421359 is an apocalyptic number.

67421359 is a deficient number, since it is larger than the sum of its proper divisors (1434545).

67421359 is a wasteful number, since it uses less digits than its factorization.

67421359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434544.

The product of its digits is 45360, while the sum is 37.

The square root of 67421359 is about 8211.0510289487. The cubic root of 67421359 is about 407.0044591792.

The spelling of 67421359 in words is "sixty-seven million, four hundred twenty-one thousand, three hundred fifty-nine".