2064645886 has 16 divisors (see below), whose sum is σ = 3280531104. Its totient is φ = 971186944.

The previous prime is 2064645881. The next prime is 2064645901. The reversal of 2064645886 is 6885464602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064645881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77991 + ... + 101053.

It is an arithmetic number, because the mean of its divisors is an integer number (205033194).

Almost surely, 2^2064645886 is an apocalyptic number.

2064645886 is a deficient number, since it is larger than the sum of its proper divisors (1215885218).

2064645886 is a wasteful number, since it uses less digits than its factorization.

2064645886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25715.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The square root of 2064645886 is about 45438.3745968097. The cubic root of 2064645886 is about 1273.3521474306.

The spelling of 2064645886 in words is "two billion, sixty-four million, six hundred forty-five thousand, eight hundred eighty-six".