666341580 has 24 divisors (see below), whose sum is σ = 1865756592. Its totient is φ = 177691072.

The previous prime is 666341569. The next prime is 666341651. The reversal of 666341580 is 85143666.

It is a super-2 number, since 2×666341580² = 888022202473792800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5552787 + ... + 5552906.

It is an arithmetic number, because the mean of its divisors is an integer number (77739858).

Almost surely, 2^666341580 is an apocalyptic number.

666341580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

666341580 is an abundant number, since it is smaller than the sum of its proper divisors (1199415012).

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

666341580 is a wasteful number, since it uses less digits than its factorization.

666341580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105705 (or 11105703 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 666341580 is about 25813.5929308572. The cubic root of 666341580 is about 873.4384469691.

The spelling of 666341580 in words is "six hundred sixty-six million, three hundred forty-one thousand, five hundred eighty".