67999617 has 12 divisors (see below), whose sum is σ = 112253440. Its totient is φ = 38856888.

The previous prime is 67999597. The next prime is 67999627. The reversal of 67999617 is 71699976.

It is not a de Polignac number, because 67999617 - 2¹⁶ = 67934081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67999627) 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 11 ways as a sum of consecutive naturals, for example, 539617 + ... + 539742.

Almost surely, 2^67999617 is an apocalyptic number.

It is an amenable number.

67999617 is a deficient number, since it is larger than the sum of its proper divisors (44253823).

67999617 is a wasteful number, since it uses less digits than its factorization.

67999617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079372 (or 1079369 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 67999617 is about 8246.1880284165. The cubic root of 67999617 is about 408.1647438796.

The spelling of 67999617 in words is "sixty-seven million, nine hundred ninety-nine thousand, six hundred seventeen".