645570114 has 64 divisors (see below), whose sum is σ = 1499860992. Its totient is φ = 181440000.

The previous prime is 645570091. The next prime is 645570119. The reversal of 645570114 is 411075546.

645570114 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (645570119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859239 + ... + 859989.

It is an arithmetic number, because the mean of its divisors is an integer number (23435328).

Almost surely, 2^645570114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645570114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749930496).

645570114 is an abundant number, since it is smaller than the sum of its proper divisors (854290878).

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

645570114 is a wasteful number, since it uses less digits than its factorization.

645570114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 645570114 is about 25408.0718276693. The cubic root of 645570114 is about 864.2667509469.

The spelling of 645570114 in words is "six hundred forty-five million, five hundred seventy thousand, one hundred fourteen".