2006645830 has 32 divisors (see below), whose sum is σ = 4370780736. Its totient is φ = 647522304.

The previous prime is 2006645791. The next prime is 2006645831. The reversal of 2006645830 is 385466002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006645831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841939 + ... + 844318.

It is an arithmetic number, because the mean of its divisors is an integer number (136586898).

Almost surely, 2^2006645830 is an apocalyptic number.

2006645830 is an abundant number, since it is smaller than the sum of its proper divisors (2364134906).

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

2006645830 is a wasteful number, since it uses less digits than its factorization.

2006645830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686288.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2006645830 is about 44795.6005652341. The cubic root of 2006645830 is about 1261.3150438438.

The spelling of 2006645830 in words is "two billion, six million, six hundred forty-five thousand, eight hundred thirty".