67161143 has 16 divisors (see below), whose sum is σ = 81131520. Its totient is φ = 54310176.

The previous prime is 67161137. The next prime is 67161197. The reversal of 67161143 is 34116176.

It is a cyclic number.

It is not a de Polignac number, because 67161143 - 2⁶ = 67161079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67161103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35930 + ... + 37752.

It is an arithmetic number, because the mean of its divisors is an integer number (5070720).

Almost surely, 2^67161143 is an apocalyptic number.

67161143 is a deficient number, since it is larger than the sum of its proper divisors (13970377).

67161143 is a wasteful number, since it uses less digits than its factorization.

67161143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its digits is 3024, while the sum is 29.

The square root of 67161143 is about 8195.1902357419. The cubic root of 67161143 is about 406.4801662817.

The spelling of 67161143 in words is "sixty-seven million, one hundred sixty-one thousand, one hundred forty-three".