666607104 has 80 divisors (see below), whose sum is σ = 1973244240. Its totient is φ = 222197760.

The previous prime is 666607087. The next prime is 666607121. The reversal of 666607104 is 401706666.

666607104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (666607087) and next prime (666607121).

It is a super-2 number, since 2×666607104² = 888730062206533632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 10287 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (24665553).

Almost surely, 2^666607104 is an apocalyptic number.

666607104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

666607104 is an abundant number, since it is smaller than the sum of its proper divisors (1306637136).

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

666607104 is an equidigital number, since it uses as much as digits as its factorization.

666607104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48248 (or 48226 counting only the distinct ones).

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

The square root of 666607104 is about 25818.7355228718. The cubic root of 666607104 is about 873.5544475704.

The spelling of 666607104 in words is "six hundred sixty-six million, six hundred seven thousand, one hundred four".