66419532 has 18 divisors (see below), whose sum is σ = 167893908. Its totient is φ = 22139832.

The previous prime is 66419531. The next prime is 66419537. The reversal of 66419532 is 23591466.

It is a happy number.

66419532 is a `hidden beast` number, since 6 + 641 + 9 + 5 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1844987 = 66419532 / (6 + 6 + 4 + 1 + 9 + 5 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (66419531) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 922458 + ... + 922529.

Almost surely, 2^66419532 is an apocalyptic number.

It is an amenable number.

66419532 is an abundant number, since it is smaller than the sum of its proper divisors (101474376).

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

66419532 is a wasteful number, since it uses less digits than its factorization.

66419532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844997 (or 1844992 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 66419532 is about 8149.8179120763. The cubic root of 66419532 is about 404.9784716494.

The spelling of 66419532 in words is "sixty-six million, four hundred nineteen thousand, five hundred thirty-two".