67840713 has 32 divisors (see below), whose sum is σ = 104417280. Its totient is φ = 43500240.

The previous prime is 67840711. The next prime is 67840769. The reversal of 67840713 is 31704876.

It is not a de Polignac number, because 67840713 - 2¹ = 67840711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67840711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82020 + ... + 82842.

It is an arithmetic number, because the mean of its divisors is an integer number (3263040).

Almost surely, 2^67840713 is an apocalyptic number.

It is an amenable number.

67840713 is a deficient number, since it is larger than the sum of its proper divisors (36576567).

67840713 is a wasteful number, since it uses less digits than its factorization.

67840713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 67840713 is about 8236.5473956021. The cubic root of 67840713 is about 407.8465577845.

The spelling of 67840713 in words is "sixty-seven million, eight hundred forty thousand, seven hundred thirteen".