1656055666 has 8 divisors (see below), whose sum is σ = 2484365040. Its totient is φ = 827933988.

The previous prime is 1656055651. The next prime is 1656055673. The reversal of 1656055666 is 6665506561.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22276 + ... + 61711.

It is an arithmetic number, because the mean of its divisors is an integer number (310545630).

Almost surely, 2^1656055666 is an apocalyptic number.

1656055666 is a deficient number, since it is larger than the sum of its proper divisors (828309374).

1656055666 is an equidigital number, since it uses as much as digits as its factorization.

1656055666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93848.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 1656055666 is about 40694.6638516649. The cubic root of 1656055666 is about 1183.1095962813.

The spelling of 1656055666 in words is "one billion, six hundred fifty-six million, fifty-five thousand, six hundred sixty-six".