666272610 has 24 divisors (see below), whose sum is σ = 1732309020. Its totient is φ = 177672672.

The previous prime is 666272599. The next prime is 666272627. The reversal of 666272610 is 16272666.

666272610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 633679929 + 32592681 = 25173^2 + 5709^2 .

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, 3701425 + ... + 3701604.

Almost surely, 2^666272610 is an apocalyptic number.

666272610 is an abundant number, since it is smaller than the sum of its proper divisors (1066036410).

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

666272610 is a wasteful number, since it uses less digits than its factorization.

666272610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7403042 (or 7403039 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 666272610 is about 25812.2569722215. The cubic root of 666272610 is about 873.4083107096.

The spelling of 666272610 in words is "six hundred sixty-six million, two hundred seventy-two thousand, six hundred ten".