67667328 has 96 divisors (see below), whose sum is σ = 196513200. Its totient is φ = 22348800.

The previous prime is 67667321. The next prime is 67667351. The reversal of 67667328 is 82376676.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67667321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173758 + ... + 174146.

Almost surely, 2^67667328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67667328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98256600).

67667328 is an abundant number, since it is smaller than the sum of its proper divisors (128845872).

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

67667328 is a wasteful number, since it uses less digits than its factorization.

67667328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 545 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 67667328 is about 8226.0153172724. The cubic root of 67667328 is about 407.4988078804.

The spelling of 67667328 in words is "sixty-seven million, six hundred sixty-seven thousand, three hundred twenty-eight".