66388082 has 8 divisors (see below), whose sum is σ = 99630000. Its totient is φ = 33178084.

The previous prime is 66388079. The next prime is 66388093. The reversal of 66388082 is 28088366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832 + ... + 11667.

It is an arithmetic number, because the mean of its divisors is an integer number (12453750).

Almost surely, 2^66388082 is an apocalyptic number.

66388082 is a deficient number, since it is larger than the sum of its proper divisors (33241918).

66388082 is a wasteful number, since it uses less digits than its factorization.

66388082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15960.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 66388082 is about 8147.8881926546. Note that the first 3 decimals coincide. The cubic root of 66388082 is about 404.9145417413.

The spelling of 66388082 in words is "sixty-six million, three hundred eighty-eight thousand, eighty-two".