66531352 has 8 divisors (see below), whose sum is σ = 124746300. Its totient is φ = 33265672.

The previous prime is 66531343. The next prime is 66531359. The reversal of 66531352 is 25313566.

66531352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66531359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4158202 + ... + 4158217.

Almost surely, 2^66531352 is an apocalyptic number.

It is an amenable number.

66531352 is a deficient number, since it is larger than the sum of its proper divisors (58214948).

66531352 is a wasteful number, since it uses less digits than its factorization.

66531352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8316425 (or 8316421 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 66531352 is about 8156.6753030876. The cubic root of 66531352 is about 405.2056101743.

The spelling of 66531352 in words is "sixty-six million, five hundred thirty-one thousand, three hundred fifty-two".