66560704 has 28 divisors (see below), whose sum is σ = 150951184. Its totient is φ = 28525824.

The previous prime is 66560701. The next prime is 66560719. The reversal of 66560704 is 40706566.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 66560704.

It is not an unprimeable number, because it can be changed into a prime (66560701) 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, 73839 + ... + 74734.

Almost surely, 2^66560704 is an apocalyptic number.

66560704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66560704 is an abundant number, since it is smaller than the sum of its proper divisors (84390480).

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

66560704 is a wasteful number, since it uses less digits than its factorization.

66560704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148592 (or 148582 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 66560704 is about 8158.4743671841. The cubic root of 66560704 is about 405.2651903376.

The spelling of 66560704 in words is "sixty-six million, five hundred sixty thousand, seven hundred four".