66311084 has 24 divisors (see below), whose sum is σ = 140424480. Its totient is φ = 26747136.

The previous prime is 66311059. The next prime is 66311111. The reversal of 66311084 is 48011366.

It is a super-3 number, since 3×66311084³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69179 + ... + 70130.

It is an arithmetic number, because the mean of its divisors is an integer number (5851020).

Almost surely, 2^66311084 is an apocalyptic number.

It is an amenable number.

66311084 is an abundant number, since it is smaller than the sum of its proper divisors (74113396).

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

66311084 is a wasteful number, since it uses less digits than its factorization.

66311084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139337 (or 139335 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 66311084 is about 8143.1617937998. The cubic root of 66311084 is about 404.7579389789.

The spelling of 66311084 in words is "sixty-six million, three hundred eleven thousand, eighty-four".