66502016 has 96 divisors (see below), whose sum is σ = 161164080. Its totient is φ = 27202560.

The previous prime is 66502013. The next prime is 66502031. The reversal of 66502016 is 61020566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66502013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144026 + ... + 144486.

Almost surely, 2^66502016 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 66502016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80582040).

66502016 is an abundant number, since it is smaller than the sum of its proper divisors (94662064).

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

66502016 is a wasteful number, since it uses less digits than its factorization.

66502016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66502016 is about 8154.8768231041. The cubic root of 66502016 is about 405.1460449769.

The spelling of 66502016 in words is "sixty-six million, five hundred two thousand, sixteen".