66731084 has 12 divisors (see below), whose sum is σ = 133462224. Its totient is φ = 28599024.

The previous prime is 66731083. The next prime is 66731107. The reversal of 66731084 is 48013766.

66731084 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66731083) 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, 1191599 + ... + 1191654.

It is an arithmetic number, because the mean of its divisors is an integer number (11121852).

Almost surely, 2^66731084 is an apocalyptic number.

It is an amenable number.

66731084 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.

66731084 is a wasteful number, since it uses less digits than its factorization.

66731084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383264 (or 2383262 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66731084 is about 8168.9095967577. The cubic root of 66731084 is about 405.6106907408.

The spelling of 66731084 in words is "sixty-six million, seven hundred thirty-one thousand, eighty-four".