67081312 has 12 divisors (see below), whose sum is σ = 132066396. Its totient is φ = 33540640.

The previous prime is 67081309. The next prime is 67081319. The reversal of 67081312 is 21318076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67081319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048114 + ... + 1048177.

It is an arithmetic number, because the mean of its divisors is an integer number (11005533).

Almost surely, 2^67081312 is an apocalyptic number.

It is an amenable number.

67081312 is a deficient number, since it is larger than the sum of its proper divisors (64985084).

67081312 is a wasteful number, since it uses less digits than its factorization.

67081312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096301 (or 2096293 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 67081312 is about 8190.3181867373. The cubic root of 67081312 is about 406.3190483976.

Adding to 67081312 its reverse (21318076), we get a palindrome (88399388).

The spelling of 67081312 in words is "sixty-seven million, eighty-one thousand, three hundred twelve".