67839988 has 12 divisors (see below), whose sum is σ = 121246272. Its totient is φ = 33198200.

The previous prime is 67839973. The next prime is 67840001. The reversal of 67839988 is 88993876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180238 + ... + 180613.

It is an arithmetic number, because the mean of its divisors is an integer number (10103856).

Almost surely, 2^67839988 is an apocalyptic number.

It is an amenable number.

67839988 is a deficient number, since it is larger than the sum of its proper divisors (53406284).

67839988 is a wasteful number, since it uses less digits than its factorization.

67839988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360902 (or 360900 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 67839988 is about 8236.5033843252. The cubic root of 67839988 is about 407.8451049214.

The spelling of 67839988 in words is "sixty-seven million, eight hundred thirty-nine thousand, nine hundred eighty-eight".