66546582 has 8 divisors (see below), whose sum is σ = 133093176. Its totient is φ = 22182192.

The previous prime is 66546563. The next prime is 66546583. The reversal of 66546582 is 28564566.

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

66546582 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66546583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545543 + ... + 5545554.

It is an arithmetic number, because the mean of its divisors is an integer number (16636647).

Almost surely, 2^66546582 is an apocalyptic number.

66546582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66546582 is a wasteful number, since it uses less digits than its factorization.

66546582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091102.

The product of its digits is 345600, while the sum is 42.

The square root of 66546582 is about 8157.6088408307. The cubic root of 66546582 is about 405.2365269798.

The spelling of 66546582 in words is "sixty-six million, five hundred forty-six thousand, five hundred eighty-two".