66808032 has 24 divisors (see below), whose sum is σ = 175371336. Its totient is φ = 22269312.

The previous prime is 66808013. The next prime is 66808043. The reversal of 66808032 is 23080866.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 66807984 and 66808002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347863 + ... + 348054.

It is an arithmetic number, because the mean of its divisors is an integer number (7307139).

Almost surely, 2^66808032 is an apocalyptic number.

It is an amenable number.

66808032 is an abundant number, since it is smaller than the sum of its proper divisors (108563304).

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

66808032 is a wasteful number, since it uses less digits than its factorization.

66808032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695930 (or 695922 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 66808032 is about 8173.6180483309. The cubic root of 66808032 is about 405.7665348679.

Adding to 66808032 its reverse (23080866), we get a palindrome (89888898).

The spelling of 66808032 in words is "sixty-six million, eight hundred eight thousand, thirty-two".