2066640334 has 16 divisors (see below), whose sum is σ = 3387557376. Its totient is φ = 937775800.

The previous prime is 2066640269. The next prime is 2066640341. The reversal of 2066640334 is 4330466602.

It is a self number, because there is not a number n which added to its sum of digits gives 2066640334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67102 + ... + 92929.

It is an arithmetic number, because the mean of its divisors is an integer number (211722336).

Almost surely, 2^2066640334 is an apocalyptic number.

2066640334 is a deficient number, since it is larger than the sum of its proper divisors (1320917042).

2066640334 is a wasteful number, since it uses less digits than its factorization.

2066640334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160631.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 2066640334 is about 45460.3160349771. The cubic root of 2066640334 is about 1273.7620348818.

The spelling of 2066640334 in words is "two billion, sixty-six million, six hundred forty thousand, three hundred thirty-four".