67138011 has 8 divisors (see below), whose sum is σ = 99463760. Its totient is φ = 44758656.

The previous prime is 67137977. The next prime is 67138031. The reversal of 67138011 is 11083176.

It is not a de Polignac number, because 67138011 - 2⁷ = 67137883 is a prime.

It is a super-2 number, since 2×67138011² = 9015025042072242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2486593 = 67138011 / (6 + 7 + 1 + 3 + 8 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67138031) 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, 1243270 + ... + 1243323.

It is an arithmetic number, because the mean of its divisors is an integer number (12432970).

Almost surely, 2^67138011 is an apocalyptic number.

67138011 is a deficient number, since it is larger than the sum of its proper divisors (32325749).

67138011 is a wasteful number, since it uses less digits than its factorization.

67138011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486602 (or 2486596 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 67138011 is about 8193.7787985764. The cubic root of 67138011 is about 406.4334935654.

The spelling of 67138011 in words is "sixty-seven million, one hundred thirty-eight thousand, eleven".