66836016 has 100 divisors (see below), whose sum is σ = 208375552. Its totient is φ = 20559744.

The previous prime is 66835987. The next prime is 66836041. The reversal of 66836016 is 61063866.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14865 + ... + 18831.

Almost surely, 2^66836016 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 66836016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104187776).

66836016 is an abundant number, since it is smaller than the sum of its proper divisors (141539536).

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

66836016 is a wasteful number, since it uses less digits than its factorization.

66836016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000 (or 3985 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 66836016 is about 8175.3297181215. The cubic root of 66836016 is about 405.8231816777.

The spelling of 66836016 in words is "sixty-six million, eight hundred thirty-six thousand, sixteen".