67647013 has 8 divisors (see below), whose sum is σ = 77633600. Its totient is φ = 57741120.

The previous prime is 67646947. The next prime is 67647017. The reversal of 67647013 is 31074676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67647013 is a prime.

It is a super-2 number, since 2×67647013² = 9152236735644338, which contains 22 as substring.

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 67647013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67647017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18363 + ... + 21736.

It is an arithmetic number, because the mean of its divisors is an integer number (9704200).

Almost surely, 2^67647013 is an apocalyptic number.

It is an amenable number.

67647013 is a deficient number, since it is larger than the sum of its proper divisors (9986587).

67647013 is a wasteful number, since it uses less digits than its factorization.

67647013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40347.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 67647013 is about 8224.7804226010. The cubic root of 67647013 is about 407.4580242058.

The spelling of 67647013 in words is "sixty-seven million, six hundred forty-seven thousand, thirteen".