645270202 has 8 divisors (see below), whose sum is σ = 968658912. Its totient is φ = 322383900.

The previous prime is 645270193. The next prime is 645270257. The reversal of 645270202 is 202072546.

645270202 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, 122374 + ... + 127537.

It is an arithmetic number, because the mean of its divisors is an integer number (121082364).

Almost surely, 2^645270202 is an apocalyptic number.

645270202 is a deficient number, since it is larger than the sum of its proper divisors (323388710).

645270202 is a wasteful number, since it uses less digits than its factorization.

645270202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251204.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 645270202 is about 25402.1692380789. The cubic root of 645270202 is about 864.1328929744.

The spelling of 645270202 in words is "six hundred forty-five million, two hundred seventy thousand, two hundred two".