666700404 has 24 divisors (see below), whose sum is σ = 1560951840. Its totient is φ = 221473824.

The previous prime is 666700403. The next prime is 666700417. The reversal of 666700404 is 404007666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666700403) 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, 91294 + ... + 98325.

It is an arithmetic number, because the mean of its divisors is an integer number (65039660).

Almost surely, 2^666700404 is an apocalyptic number.

It is an amenable number.

666700404 is an abundant number, since it is smaller than the sum of its proper divisors (894251436).

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

666700404 is a wasteful number, since it uses less digits than its factorization.

666700404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189919 (or 189917 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 666700404 is about 25820.5422871016. The cubic root of 666700404 is about 873.5952006254.

The spelling of 666700404 in words is "six hundred sixty-six million, seven hundred thousand, four hundred four".