67939808 has 48 divisors (see below), whose sum is σ = 139482000. Its totient is φ = 32535552.

The previous prime is 67939783. The next prime is 67939819. The reversal of 67939808 is 80893976.

It is a super-2 number, since 2×67939808² = 9231635022153728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 165908 + ... + 166316.

It is an arithmetic number, because the mean of its divisors is an integer number (2905875).

Almost surely, 2^67939808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67939808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69741000).

67939808 is an abundant number, since it is smaller than the sum of its proper divisors (71542192).

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

67939808 is a wasteful number, since it uses less digits than its factorization.

67939808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 67939808 is about 8242.5607671403. The cubic root of 67939808 is about 408.0450418042.

The spelling of 67939808 in words is "sixty-seven million, nine hundred thirty-nine thousand, eight hundred eight".