67984820 has 12 divisors (see below), whose sum is σ = 142768164. Its totient is φ = 27193920.

The previous prime is 67984811. The next prime is 67984823. The reversal of 67984820 is 2848976.

It can be written as a sum of positive squares in 2 ways, for example, as 10407076 + 57577744 = 3226^2 + 7588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67984823) by changing a digit.

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, 1699601 + ... + 1699640.

It is an arithmetic number, because the mean of its divisors is an integer number (11897347).

Almost surely, 2^67984820 is an apocalyptic number.

It is an amenable number.

67984820 is an abundant number, since it is smaller than the sum of its proper divisors (74783344).

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

67984820 is a wasteful number, since it uses less digits than its factorization.

67984820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399250 (or 3399248 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 67984820 is about 8245.2907771649. The cubic root of 67984820 is about 408.1351356155.

The spelling of 67984820 in words is "sixty-seven million, nine hundred eighty-four thousand, eight hundred twenty".