645000602 has 16 divisors (see below), whose sum is σ = 1014152832. Its totient is φ = 307315680.

The previous prime is 645000589. The next prime is 645000607. The reversal of 645000602 is 206000546.

It is not an unprimeable number, because it can be changed into a prime (645000607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87938 + ... + 94989.

It is an arithmetic number, because the mean of its divisors is an integer number (63384552).

Almost surely, 2^645000602 is an apocalyptic number.

645000602 is a deficient number, since it is larger than the sum of its proper divisors (369152230).

645000602 is a wasteful number, since it uses less digits than its factorization.

645000602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183013.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 645000602 is about 25396.8620502612. The cubic root of 645000602 is about 864.0125285749.

The spelling of 645000602 in words is "six hundred forty-five million, six hundred two", and thus it is an aban number.