67840002 has 24 divisors (see below), whose sum is σ = 148291884. Its totient is φ = 22412544.

The previous prime is 67840001. The next prime is 67840009. The reversal of 67840002 is 20004876.

It can be written as a sum of positive squares in 2 ways, for example, as 48734361 + 19105641 = 6981^2 + 4371^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67840001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14643 + ... + 18710.

Almost surely, 2^67840002 is an apocalyptic number.

67840002 is an abundant number, since it is smaller than the sum of its proper divisors (80451882).

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

67840002 is a wasteful number, since it uses less digits than its factorization.

67840002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33474 (or 33471 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 67840002 is about 8236.5042342003. The cubic root of 67840002 is about 407.8451329768.

Adding to 67840002 its reverse (20004876), we get a palindrome (87844878).

The spelling of 67840002 in words is "sixty-seven million, eight hundred forty thousand, two".