67999064 has 32 divisors (see below), whose sum is σ = 148692000. Its totient is φ = 29141280.

The previous prime is 67999051. The next prime is 67999067. The reversal of 67999064 is 46099976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67999067) 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 7 ways as a sum of consecutive naturals, for example, 9647 + ... + 15134.

It is an arithmetic number, because the mean of its divisors is an integer number (4646625).

Almost surely, 2^67999064 is an apocalyptic number.

It is an amenable number.

67999064 is an abundant number, since it is smaller than the sum of its proper divisors (80692936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67999064 is a wasteful number, since it uses less digits than its factorization.

67999064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24808 (or 24790 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 67999064 is about 8246.1544977038. The cubic root of 67999064 is about 408.1636374237.

The spelling of 67999064 in words is "sixty-seven million, nine hundred ninety-nine thousand, sixty-four".