67047940 has 12 divisors (see below), whose sum is σ = 140800716. Its totient is φ = 26819168.

The previous prime is 67047919. The next prime is 67047943. The reversal of 67047940 is 4974076.

67047940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32285124 + 34762816 = 5682^2 + 5896^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67047940.

It is not an unprimeable number, because it can be changed into a prime (67047943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676179 + ... + 1676218.

It is an arithmetic number, because the mean of its divisors is an integer number (11733393).

Almost surely, 2^67047940 is an apocalyptic number.

It is an amenable number.

67047940 is an abundant number, since it is smaller than the sum of its proper divisors (73752776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67047940 is a wasteful number, since it uses less digits than its factorization.

67047940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352406 (or 3352404 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 67047940 is about 8188.2806498068. The cubic root of 67047940 is about 406.2516579025.

The spelling of 67047940 in words is "sixty-seven million, forty-seven thousand, nine hundred forty".