67755913 has 4 divisors (see below), whose sum is σ = 68110848. Its totient is φ = 67400980.

The previous prime is 67755893. The next prime is 67755923. The reversal of 67755913 is 31955776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67755913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67755913.

It is not an unprimeable number, because it can be changed into a prime (67755923) 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, 177181 + ... + 177562.

It is an arithmetic number, because the mean of its divisors is an integer number (17027712).

Almost surely, 2^67755913 is an apocalyptic number.

It is an amenable number.

67755913 is a deficient number, since it is larger than the sum of its proper divisors (354935).

67755913 is a wasteful number, since it uses less digits than its factorization.

67755913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354934.

The product of its digits is 198450, while the sum is 43.

The square root of 67755913 is about 8231.3979979102. The cubic root of 67755913 is about 407.6765526504.

The spelling of 67755913 in words is "sixty-seven million, seven hundred fifty-five thousand, nine hundred thirteen".