67712768 has 36 divisors (see below), whose sum is σ = 143120880. Its totient is φ = 31862784.

The previous prime is 67712761. The next prime is 67712783. The reversal of 67712768 is 86721776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67712761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3428 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (3975580).

Almost surely, 2^67712768 is an apocalyptic number.

67712768 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

67712768 is an abundant number, since it is smaller than the sum of its proper divisors (75408112).

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

67712768 is a wasteful number, since it uses less digits than its factorization.

67712768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15592 (or 15578 counting only the distinct ones).

The product of its digits is 197568, while the sum is 44.

The square root of 67712768 is about 8228.7768228334. The cubic root of 67712768 is about 407.5900020757.

The spelling of 67712768 in words is "sixty-seven million, seven hundred twelve thousand, seven hundred sixty-eight".