66669432 has 32 divisors (see below), whose sum is σ = 166924800. Its totient is φ = 22189664.

The previous prime is 66669431. The next prime is 66669439. The reversal of 66669432 is 23496666.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66669431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18169 + ... + 21527.

It is an arithmetic number, because the mean of its divisors is an integer number (5216400).

Almost surely, 2^66669432 is an apocalyptic number.

It is an amenable number.

66669432 is an abundant number, since it is smaller than the sum of its proper divisors (100255368).

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

66669432 is a wasteful number, since it uses less digits than its factorization.

66669432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195 (or 4191 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 66669432 is about 8165.1351489121. The cubic root of 66669432 is about 405.4857393993.

The spelling of 66669432 in words is "sixty-six million, six hundred sixty-nine thousand, four hundred thirty-two".