66056004 has 36 divisors (see below), whose sum is σ = 190829184. Its totient is φ = 18873072.

The previous prime is 66055993. The next prime is 66056017. The reversal of 66056004 is 40065066.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130812 + ... + 131315.

Almost surely, 2^66056004 is an apocalyptic number.

It is an amenable number.

66056004 is an abundant number, since it is smaller than the sum of its proper divisors (124773180).

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

66056004 is a wasteful number, since it uses less digits than its factorization.

66056004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262144 (or 262139 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66056004 is about 8127.4844816831. The cubic root of 66056004 is about 404.2382756079.

The spelling of 66056004 in words is "sixty-six million, fifty-six thousand, four", and thus it is an eban number.