644046114 has 8 divisors (see below), whose sum is σ = 1288092240. Its totient is φ = 214682036.

The previous prime is 644046107. The next prime is 644046119. The reversal of 644046114 is 411640446.

It is a sphenic number, since it is the product of 3 distinct primes.

644046114 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (644046119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53670504 + ... + 53670515.

It is an arithmetic number, because the mean of its divisors is an integer number (161011530).

Almost surely, 2^644046114 is an apocalyptic number.

644046114 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

644046114 is a wasteful number, since it uses less digits than its factorization.

644046114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107341024.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 644046114 is about 25378.0636377167. The cubic root of 644046114 is about 863.5861223972.

The spelling of 644046114 in words is "six hundred forty-four million, forty-six thousand, one hundred fourteen".