66986382 has 32 divisors (see below), whose sum is σ = 137140128. Its totient is φ = 21805056.

The previous prime is 66986371. The next prime is 66986407. The reversal of 66986382 is 28368966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99198 + ... + 99870.

It is an arithmetic number, because the mean of its divisors is an integer number (4285629).

Almost surely, 2^66986382 is an apocalyptic number.

66986382 is an abundant number, since it is smaller than the sum of its proper divisors (70153746).

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

66986382 is a wasteful number, since it uses less digits than its factorization.

66986382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 746496, while the sum is 48.

The square root of 66986382 is about 8184.5208778523. The cubic root of 66986382 is about 406.1272906865.

The spelling of 66986382 in words is "sixty-six million, nine hundred eighty-six thousand, three hundred eighty-two".