66303276 has 48 divisors (see below), whose sum is σ = 170171904. Its totient is φ = 19964736.

The previous prime is 66303253. The next prime is 66303277. The reversal of 66303276 is 67230366.

It is a super-2 number, since 2×66303276² = 8792248816664352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66303277) 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, 2811 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (3545248).

Almost surely, 2^66303276 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 66303276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85085952).

66303276 is an abundant number, since it is smaller than the sum of its proper divisors (103868628).

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

66303276 is a wasteful number, since it uses less digits than its factorization.

66303276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110 (or 9108 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 66303276 is about 8142.6823590264. The cubic root of 66303276 is about 404.7420518710.

The spelling of 66303276 in words is "sixty-six million, three hundred three thousand, two hundred seventy-six".