66752512 has 52 divisors (see below), whose sum is σ = 136953520. Its totient is φ = 32514048.

The previous prime is 66752503. The next prime is 66752527. The reversal of 66752512 is 21525766.

It is a nialpdrome in base 4.

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, 175939 + ... + 176317.

Almost surely, 2^66752512 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 66752512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68476760).

66752512 is an abundant number, since it is smaller than the sum of its proper divisors (70201008).

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

66752512 is an equidigital number, since it uses as much as digits as its factorization.

66752512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 424 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 66752512 is about 8170.2210496412. The cubic root of 66752512 is about 405.6541012737.

The spelling of 66752512 in words is "sixty-six million, seven hundred fifty-two thousand, five hundred twelve".