645009014 has 16 divisors (see below), whose sum is σ = 1056615840. Its totient is φ = 293502720.

The previous prime is 645008999. The next prime is 645009037. The reversal of 645009014 is 410900546.

645009014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 172859 + ... + 176550.

It is an arithmetic number, because the mean of its divisors is an integer number (66038490).

Almost surely, 2^645009014 is an apocalyptic number.

645009014 is a deficient number, since it is larger than the sum of its proper divisors (411606826).

645009014 is a wasteful number, since it uses less digits than its factorization.

645009014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349495.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 645009014 is about 25397.0276607323. The cubic root of 645009014 is about 864.0162846653.

The spelling of 645009014 in words is "six hundred forty-five million, nine thousand, fourteen".