67140155 has 8 divisors (see below), whose sum is σ = 80747232. Its totient is φ = 53592768.

The previous prime is 67140149. The next prime is 67140181. The reversal of 67140155 is 55104176.

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 67140155 - 2¹⁰ = 67139131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12407 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (10093404).

Almost surely, 2^67140155 is an apocalyptic number.

67140155 is a deficient number, since it is larger than the sum of its proper divisors (13607077).

67140155 is a wasteful number, since it uses less digits than its factorization.

67140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29845.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 67140155 is about 8193.9096284985. The cubic root of 67140155 is about 406.4378198982.

The spelling of 67140155 in words is "sixty-seven million, one hundred forty thousand, one hundred fifty-five".