67775616 has 96 divisors (see below), whose sum is σ = 202347600. Its totient is φ = 22581504.

The previous prime is 67775573. The next prime is 67775623. The reversal of 67775616 is 61657776.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30015 + ... + 32193.

Almost surely, 2^67775616 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 67775616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101173800).

67775616 is an abundant number, since it is smaller than the sum of its proper divisors (134571984).

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

67775616 is an equidigital number, since it uses as much as digits as its factorization.

67775616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2184 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 67775616 is about 8232.5947307031. The cubic root of 67775616 is about 407.7160654264.

The spelling of 67775616 in words is "sixty-seven million, seven hundred seventy-five thousand, six hundred sixteen".