67839964 has 6 divisors (see below), whose sum is σ = 118719944. Its totient is φ = 33919980.

The previous prime is 67839929. The next prime is 67839973. The reversal of 67839964 is 46993876.

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 as a sum of consecutive naturals, namely, 8479992 + ... + 8479999.

Almost surely, 2^67839964 is an apocalyptic number.

It is an amenable number.

67839964 is a deficient number, since it is larger than the sum of its proper divisors (50879980).

67839964 is a wasteful number, since it uses less digits than its factorization.

67839964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16959995 (or 16959993 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 67839964 is about 8236.5019273961. The cubic root of 67839964 is about 407.8450568265.

The spelling of 67839964 in words is "sixty-seven million, eight hundred thirty-nine thousand, nine hundred sixty-four".