67140723 has 8 divisors (see below), whose sum is σ = 96407248. Its totient is φ = 41317344.

The previous prime is 67140721. The next prime is 67140751. The reversal of 67140723 is 32704176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67140723 - 2¹ = 67140721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67140721) by changing a digit.

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, 860740 + ... + 860817.

It is an arithmetic number, because the mean of its divisors is an integer number (12050906).

Almost surely, 2^67140723 is an apocalyptic number.

67140723 is a deficient number, since it is larger than the sum of its proper divisors (29266525).

67140723 is a wasteful number, since it uses less digits than its factorization.

67140723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721573.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 67140723 is about 8193.9442883144. The cubic root of 67140723 is about 406.4389660381.

Adding to 67140723 its reverse (32704176), we get a palindrome (99844899).

The spelling of 67140723 in words is "sixty-seven million, one hundred forty thousand, seven hundred twenty-three".