666071360 has 28 divisors (see below), whose sum is σ = 1586083188. Its totient is φ = 266428416.

The previous prime is 666071327. The next prime is 666071389. The reversal of 666071360 is 63170666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 236421376 + 429649984 = 15376^2 + 20728^2 .

It is a super-2 number, since 2×666071360² = 887302113224499200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666071360.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040417 + ... + 1041056.

Almost surely, 2^666071360 is an apocalyptic number.

It is an amenable number.

666071360 is an abundant number, since it is smaller than the sum of its proper divisors (920011828).

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

666071360 is a wasteful number, since it uses less digits than its factorization.

666071360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081490 (or 2081480 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 666071360 is about 25808.3583360120. The cubic root of 666071360 is about 873.3203631636.

The spelling of 666071360 in words is "six hundred sixty-six million, seventy-one thousand, three hundred sixty".