67663716 has 12 divisors (see below), whose sum is σ = 157882032. Its totient is φ = 22554568.

The previous prime is 67663711. The next prime is 67663741. The reversal of 67663716 is 61736676.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (67663711) 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 3 ways as a sum of consecutive naturals, for example, 2819310 + ... + 2819333.

It is an arithmetic number, because the mean of its divisors is an integer number (13156836).

Almost surely, 2^67663716 is an apocalyptic number.

It is an amenable number.

67663716 is an abundant number, since it is smaller than the sum of its proper divisors (90218316).

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

67663716 is a wasteful number, since it uses less digits than its factorization.

67663716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638650 (or 5638648 counting only the distinct ones).

The product of its digits is 190512, while the sum is 42.

The square root of 67663716 is about 8225.7957669760. The cubic root of 67663716 is about 407.4915571538.

The spelling of 67663716 in words is "sixty-seven million, six hundred sixty-three thousand, seven hundred sixteen".