67840804 has 12 divisors (see below), whose sum is σ = 119185164. Its totient is φ = 33787904.

The previous prime is 67840769. The next prime is 67840807. The reversal of 67840804 is 40804876.

It can be written as a sum of positive squares in 2 ways, for example, as 60871204 + 6969600 = 7802^2 + 2640^2 .

It is not an unprimeable number, because it can be changed into a prime (67840807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31969 + ... + 34024.

It is an arithmetic number, because the mean of its divisors is an integer number (9932097).

Almost surely, 2^67840804 is an apocalyptic number.

It is an amenable number.

67840804 is a deficient number, since it is larger than the sum of its proper divisors (51344360).

67840804 is a wasteful number, since it uses less digits than its factorization.

67840804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66254 (or 66252 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 67840804 is about 8236.5529197596. The cubic root of 67840804 is about 407.8467401432.

It can be divided in two parts, 67840 and 804, that added together give a square (68644 = 262²).

The spelling of 67840804 in words is "sixty-seven million, eight hundred forty thousand, eight hundred four".