2146065666 has 8 divisors (see below), whose sum is σ = 4292131344. Its totient is φ = 715355220.

The previous prime is 2146065643. The next prime is 2146065671. The reversal of 2146065666 is 6665606412.

It is a happy number.

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

2146065666 is an admirable 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, 178838800 + ... + 178838811.

It is an arithmetic number, because the mean of its divisors is an integer number (536516418).

Almost surely, 2^2146065666 is an apocalyptic number.

2146065666 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.

2146065666 is a wasteful number, since it uses less digits than its factorization.

2146065666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357677616.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 2146065666 is about 46325.6480364819. The cubic root of 2146065666 is about 1289.8751288300.

The spelling of 2146065666 in words is "two billion, one hundred forty-six million, sixty-five thousand, six hundred sixty-six".