2859666 has 8 divisors (see below), whose sum is σ = 5719344. Its totient is φ = 953220.

The previous prime is 2859641. The next prime is 2859673. The reversal of 2859666 is 6669582.

It is a sphenic number, since it is the product of 3 distinct primes.

2859666 is an admirable number.

It is a Curzon 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, 238300 + ... + 238311.

It is an arithmetic number, because the mean of its divisors is an integer number (714918).

2^2859666 is an apocalyptic number.

2859666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2859666 is a wasteful number, since it uses less digits than its factorization.

2859666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476616.

The product of its digits is 155520, while the sum is 42.

The square root of 2859666 is about 1691.0547004754. The cubic root of 2859666 is about 141.9400990490.

The spelling of 2859666 in words is "two million, eight hundred fifty-nine thousand, six hundred sixty-six".