67840011 has 14 divisors (see below), whose sum is σ = 101714580. Its totient is φ = 45226188.

The previous prime is 67840009. The next prime is 67840021. The reversal of 67840011 is 11004876.

It is a happy number.

It is not a de Polignac number, because 67840011 - 2¹ = 67840009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (67840001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 45801 + ... + 47258.

Almost surely, 2^67840011 is an apocalyptic number.

67840011 is a deficient number, since it is larger than the sum of its proper divisors (33874569).

67840011 is an frugal number, since it uses more digits than its factorization.

67840011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93077 (or 93062 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 67840011 is about 8236.5047805486. The cubic root of 67840011 is about 407.8451510124.

Adding to 67840011 its reverse (11004876), we get a palindrome (78844887).

The spelling of 67840011 in words is "sixty-seven million, eight hundred forty thousand, eleven".