66463752 has 64 divisors (see below), whose sum is σ = 172915200. Its totient is φ = 21265920.

The previous prime is 66463723. The next prime is 66463763. The reversal of 66463752 is 25736466.

It is a self number, because there is not a number n which added to its sum of digits gives 66463752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116524 + ... + 117092.

It is an arithmetic number, because the mean of its divisors is an integer number (2701800).

Almost surely, 2^66463752 is an apocalyptic number.

66463752 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66463752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86457600).

66463752 is an abundant number, since it is smaller than the sum of its proper divisors (106451448).

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

66463752 is a wasteful number, since it uses less digits than its factorization.

66463752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 762 counting only the distinct ones).

The product of its digits is 181440, while the sum is 39.

The square root of 66463752 is about 8152.5304047271. The cubic root of 66463752 is about 405.0683256162.

The spelling of 66463752 in words is "sixty-six million, four hundred sixty-three thousand, seven hundred fifty-two".