67212768 has 48 divisors (see below), whose sum is σ = 201640320. Its totient is φ = 19203456.

The previous prime is 67212751. The next prime is 67212787. The reversal of 67212768 is 86721276.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49338 + ... + 50681.

It is an arithmetic number, because the mean of its divisors is an integer number (4200840).

Almost surely, 2^67212768 is an apocalyptic number.

It is an amenable number.

67212768 is an abundant number, since it is smaller than the sum of its proper divisors (134427552).

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

67212768 is a wasteful number, since it uses less digits than its factorization.

67212768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100039 (or 100031 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 67212768 is about 8198.3393440379. The cubic root of 67212768 is about 406.5842898031.

The spelling of 67212768 in words is "sixty-seven million, two hundred twelve thousand, seven hundred sixty-eight".