645195202 has 8 divisors (see below), whose sum is σ = 969299856. Its totient is φ = 322095252.

The previous prime is 645195151. The next prime is 645195211. The reversal of 645195202 is 202591546.

It is a happy number.

645195202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249568 + ... + 252139.

It is an arithmetic number, because the mean of its divisors is an integer number (121162482).

Almost surely, 2^645195202 is an apocalyptic number.

645195202 is a deficient number, since it is larger than the sum of its proper divisors (324104654).

645195202 is a wasteful number, since it uses less digits than its factorization.

645195202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502352.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 645195202 is about 25400.6929433037. The cubic root of 645195202 is about 864.0994121794.

The spelling of 645195202 in words is "six hundred forty-five million, one hundred ninety-five thousand, two hundred two".