660606696 has 24 divisors (see below), whose sum is σ = 1789143330. Its totient is φ = 220202208.

The previous prime is 660606691. The next prime is 660606697. The reversal of 660606696 is 696606066.

It can be written as a sum of positive squares in only one way, i.e., 591948900 + 68657796 = 24330^2 + 8286^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (660606691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4587475 + ... + 4587618.

Almost surely, 2^660606696 is an apocalyptic number.

It is an amenable number.

660606696 is an abundant number, since it is smaller than the sum of its proper divisors (1128536634).

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

660606696 is a wasteful number, since it uses less digits than its factorization.

660606696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175105 (or 9175098 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 660606696 is about 25702.2702499215. The cubic root of 660606696 is about 870.9254678146.

The spelling of 660606696 in words is "six hundred sixty million, six hundred six thousand, six hundred ninety-six".