67239345 has 8 divisors (see below), whose sum is σ = 107582976. Its totient is φ = 35860976.

The previous prime is 67239331. The next prime is 67239353. The reversal of 67239345 is 54393276.

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 67239345 - 2⁴ = 67239329 is a prime.

It is a super-2 number, since 2×67239345² = 9042259032058050, which contains 22 as substring.

It is an unprimeable number.

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, 2241297 + ... + 2241326.

It is an arithmetic number, because the mean of its divisors is an integer number (13447872).

Almost surely, 2^67239345 is an apocalyptic number.

It is an amenable number.

67239345 is a deficient number, since it is larger than the sum of its proper divisors (40343631).

67239345 is a wasteful number, since it uses less digits than its factorization.

67239345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482631.

The product of its digits is 136080, while the sum is 39.

The square root of 67239345 is about 8199.9600608783. The cubic root of 67239345 is about 406.6378727112.

The spelling of 67239345 in words is "sixty-seven million, two hundred thirty-nine thousand, three hundred forty-five".