67606656 has 128 divisors (see below), whose sum is σ = 200491200. Its totient is φ = 20041728.

The previous prime is 67606639. The next prime is 67606703. The reversal of 67606656 is 65660676.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144535 + ... + 145001.

Almost surely, 2^67606656 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 67606656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100245600).

67606656 is an abundant number, since it is smaller than the sum of its proper divisors (132884544).

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

67606656 is a wasteful number, since it uses less digits than its factorization.

67606656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 67606656 is about 8222.3266780152. The cubic root of 67606656 is about 407.3769806935.

The spelling of 67606656 in words is "sixty-seven million, six hundred six thousand, six hundred fifty-six".