67641606324 has 36 divisors (see below), whose sum is σ = 170990838564. Its totient is φ = 22546161792.

The previous prime is 67641606299. The next prime is 67641606343. The reversal of 67641606324 is 42360614676.

It is a happy number.

67641606324 is a `hidden beast` number, since 6 + 7 + 6 + 4 + 1 + 6 + 0 + 632 + 4 = 666.

67641606324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13174448400 + 54467157924 = 114780^2 + 233382^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 67641606324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532614 + ... + 1576130.

Almost surely, 2^67641606324 is an apocalyptic number.

It is an amenable number.

67641606324 is an abundant number, since it is smaller than the sum of its proper divisors (103349232240).

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

67641606324 is a wasteful number, since it uses less digits than its factorization.

67641606324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86704 (or 86699 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 67641606324 in words is "sixty-seven billion, six hundred forty-one million, six hundred six thousand, three hundred twenty-four".