66546704 has 60 divisors (see below), whose sum is σ = 158839164. Its totient is φ = 26836992.

The previous prime is 66546679. The next prime is 66546707. The reversal of 66546704 is 40764566.

It can be written as a sum of positive squares in 2 ways, for example, as 37945600 + 28601104 = 6160^2 + 5348^2 .

It is not an unprimeable number, because it can be changed into a prime (66546707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10832 + ... + 15824.

Almost surely, 2^66546704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66546704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79419582).

66546704 is an abundant number, since it is smaller than the sum of its proper divisors (92292460).

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

66546704 is a wasteful number, since it uses less digits than its factorization.

66546704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5032 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 66546704 is about 8157.6163185087. The cubic root of 66546704 is about 405.2367746200.

The spelling of 66546704 in words is "sixty-six million, five hundred forty-six thousand, seven hundred four".