67999016 has 8 divisors (see below), whose sum is σ = 127498170. Its totient is φ = 33999504.

The previous prime is 67999003. The next prime is 67999021. The reversal of 67999016 is 61099976.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67996516 + 2500 = 8246^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4249931 + ... + 4249946.

Almost surely, 2^67999016 is an apocalyptic number.

It is an amenable number.

67999016 is a deficient number, since it is larger than the sum of its proper divisors (59499154).

67999016 is a wasteful number, since it uses less digits than its factorization.

67999016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8499883 (or 8499879 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 67999016 is about 8246.1515872557. The cubic root of 67999016 is about 408.1635413839.

The spelling of 67999016 in words is "sixty-seven million, nine hundred ninety-nine thousand, sixteen".