2085345666 has 24 divisors (see below), whose sum is σ = 4520325420. Its totient is φ = 694795776.

The previous prime is 2085345643. The next prime is 2085345671. The reversal of 2085345666 is 6665435802.

2085345666 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2083466025 + 1879641 = 45645^2 + 1371^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15430 + ... + 66398.

Almost surely, 2^2085345666 is an apocalyptic number.

2085345666 is an abundant number, since it is smaller than the sum of its proper divisors (2434979754).

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

2085345666 is a wasteful number, since it uses less digits than its factorization.

2085345666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53250 (or 53247 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The square root of 2085345666 is about 45665.5851380446. The cubic root of 2085345666 is about 1277.5934735265.

The spelling of 2085345666 in words is "two billion, eighty-five million, three hundred forty-five thousand, six hundred sixty-six".