666202560 has 56 divisors (see below), whose sum is σ = 2115196176. Its totient is φ = 177653760.

The previous prime is 666202549. The next prime is 666202561. The reversal of 666202560 is 65202666.

666202560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666202561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346021 + ... + 347940.

Almost surely, 2^666202560 is an apocalyptic number.

666202560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

666202560 is an abundant number, since it is smaller than the sum of its proper divisors (1448993616).

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

666202560 is a wasteful number, since it uses less digits than its factorization.

666202560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693981 (or 693971 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 666202560 is about 25810.9000230523. The cubic root of 666202560 is about 873.3777004181.

The spelling of 666202560 in words is "six hundred sixty-six million, two hundred two thousand, five hundred sixty".