666094080 has 160 divisors (see below), whose sum is σ = 2180021184. Its totient is φ = 173408256.

The previous prime is 666094063. The next prime is 666094103. The reversal of 666094080 is 80490666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×666094080² = 887362646822092800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329232 + ... + 331248.

Almost surely, 2^666094080 is an apocalyptic number.

666094080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666094080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090010592).

666094080 is an abundant number, since it is smaller than the sum of its proper divisors (1513927104).

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

666094080 is a wasteful number, since it uses less digits than its factorization.

666094080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 666094080 is about 25808.7984997365. The cubic root of 666094080 is about 873.3302928369.

The spelling of 666094080 in words is "six hundred sixty-six million, ninety-four thousand, eighty".