66457532 has 12 divisors (see below), whose sum is σ = 119005656. Its totient is φ = 32455920.

The previous prime is 66457507. The next prime is 66457543. The reversal of 66457532 is 23575466.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193019 + ... + 193362.

It is an arithmetic number, because the mean of its divisors is an integer number (9917138).

Almost surely, 2^66457532 is an apocalyptic number.

It is an amenable number.

66457532 is a deficient number, since it is larger than the sum of its proper divisors (52548124).

66457532 is a wasteful number, since it uses less digits than its factorization.

66457532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386428 (or 386426 counting only the distinct ones).

The product of its digits is 151200, while the sum is 38.

The square root of 66457532 is about 8152.1489191501. The cubic root of 66457532 is about 405.0556891364.

The spelling of 66457532 in words is "sixty-six million, four hundred fifty-seven thousand, five hundred thirty-two".