66536928 has 36 divisors (see below), whose sum is σ = 189215208. Its totient is φ = 22178880.

The previous prime is 66536923. The next prime is 66536941. The reversal of 66536928 is 82963566.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66536923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115228 + ... + 115803.

It is an arithmetic number, because the mean of its divisors is an integer number (5255978).

Almost surely, 2^66536928 is an apocalyptic number.

It is an amenable number.

66536928 is an abundant number, since it is smaller than the sum of its proper divisors (122678280).

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

66536928 is a wasteful number, since it uses less digits than its factorization.

66536928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231047 (or 231036 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 66536928 is about 8157.0171018578. The cubic root of 66536928 is about 405.2169299671.

The spelling of 66536928 in words is "sixty-six million, five hundred thirty-six thousand, nine hundred twenty-eight".