66264016 has 80 divisors (see below), whose sum is σ = 160489728. Its totient is φ = 25804800.

The previous prime is 66264013. The next prime is 66264049. The reversal of 66264016 is 61046266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66264013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103056 + ... + 103696.

Almost surely, 2^66264016 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 66264016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80244864).

66264016 is an abundant number, since it is smaller than the sum of its proper divisors (94225712).

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

66264016 is a wasteful number, since it uses less digits than its factorization.

66264016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66264016 is about 8140.2712485519. The cubic root of 66264016 is about 404.6621497843.

The spelling of 66264016 in words is "sixty-six million, two hundred sixty-four thousand, sixteen".