66047704 has 8 divisors (see below), whose sum is σ = 123839460. Its totient is φ = 33023848.

The previous prime is 66047671. The next prime is 66047719. The reversal of 66047704 is 40774066.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 66047704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4127974 + ... + 4127989.

Almost surely, 2^66047704 is an apocalyptic number.

It is an amenable number.

66047704 is a deficient number, since it is larger than the sum of its proper divisors (57791756).

66047704 is a wasteful number, since it uses less digits than its factorization.

66047704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8255969 (or 8255965 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 66047704 is about 8126.9738525481. The cubic root of 66047704 is about 404.2213439236.

The spelling of 66047704 in words is "sixty-six million, forty-seven thousand, seven hundred four".