66484404 has 36 divisors (see below), whose sum is σ = 192066784. Its totient is φ = 18995472.

The previous prime is 66484403. The next prime is 66484427. The reversal of 66484404 is 40448466.

66484404 is a `hidden beast` number, since 6 + 648 + 4 + 4 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66484403) 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, 131662 + ... + 132165.

Almost surely, 2^66484404 is an apocalyptic number.

It is an amenable number.

66484404 is an abundant number, since it is smaller than the sum of its proper divisors (125582380).

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

66484404 is a wasteful number, since it uses less digits than its factorization.

66484404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263844 (or 263839 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 66484404 is about 8153.7969069630. The cubic root of 66484404 is about 405.1102763262.

The spelling of 66484404 in words is "sixty-six million, four hundred eighty-four thousand, four hundred four".