67140556 has 24 divisors (see below), whose sum is σ = 134597120. Its totient is φ = 28706832.

The previous prime is 67140553. The next prime is 67140569. The reversal of 67140556 is 65504176.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (67140551) 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, 10375 + ... + 15553.

Almost surely, 2^67140556 is an apocalyptic number.

It is an amenable number.

67140556 is an abundant number, since it is smaller than the sum of its proper divisors (67456564).

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

67140556 is a wasteful number, since it uses less digits than its factorization.

67140556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5651 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 67140556 is about 8193.9340978556. The cubic root of 67140556 is about 406.4386290575.

The spelling of 67140556 in words is "sixty-seven million, one hundred forty thousand, five hundred fifty-six".