67431359 has 4 divisors (see below), whose sum is σ = 67688016. Its totient is φ = 67174704.

The previous prime is 67431311. The next prime is 67431373. The reversal of 67431359 is 95313476.

It is a happy number.

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 67431359 - 2²⁴ = 50654143 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 (67431379) 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, 127934 + ... + 128459.

It is an arithmetic number, because the mean of its divisors is an integer number (16922004).

Almost surely, 2^67431359 is an apocalyptic number.

67431359 is a deficient number, since it is larger than the sum of its proper divisors (256657).

67431359 is a wasteful number, since it uses less digits than its factorization.

67431359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256656.

The product of its digits is 68040, while the sum is 38.

The square root of 67431359 is about 8211.6599418144. The cubic root of 67431359 is about 407.0245806137.

The spelling of 67431359 in words is "sixty-seven million, four hundred thirty-one thousand, three hundred fifty-nine".