66069382 has 4 divisors (see below), whose sum is σ = 99104076. Its totient is φ = 33034690.

The previous prime is 66069379. The next prime is 66069389. The reversal of 66069382 is 28396066.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66069389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16517344 + ... + 16517347.

It is an arithmetic number, because the mean of its divisors is an integer number (24776019).

Almost surely, 2^66069382 is an apocalyptic number.

66069382 is a deficient number, since it is larger than the sum of its proper divisors (33034694).

66069382 is a wasteful number, since it uses less digits than its factorization.

66069382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33034693.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 66069382 is about 8128.3074498939. The cubic root of 66069382 is about 404.2655632340.

The spelling of 66069382 in words is "sixty-six million, sixty-nine thousand, three hundred eighty-two".