67140347 has 4 divisors (see below), whose sum is σ = 68407200. Its totient is φ = 65873496.

The previous prime is 67140341. The next prime is 67140377. The reversal of 67140347 is 74304176.

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 67140347 - 2⁴ = 67140331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67140341) 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 3 ways as a sum of consecutive naturals, for example, 633347 + ... + 633452.

It is an arithmetic number, because the mean of its divisors is an integer number (17101800).

Almost surely, 2^67140347 is an apocalyptic number.

67140347 is a deficient number, since it is larger than the sum of its proper divisors (1266853).

67140347 is a wasteful number, since it uses less digits than its factorization.

67140347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266852.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 67140347 is about 8193.9213445090. The cubic root of 67140347 is about 406.4382073265.

The spelling of 67140347 in words is "sixty-seven million, one hundred forty thousand, three hundred forty-seven".