640546202 has 16 divisors (see below), whose sum is σ = 1017455040. Its totient is φ = 301596768.

The previous prime is 640546199. The next prime is 640546219. The reversal of 640546202 is 202645046.

It is an unprimeable number.

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, 44123 + ... + 56814.

It is an arithmetic number, because the mean of its divisors is an integer number (63590940).

Almost surely, 2^640546202 is an apocalyptic number.

640546202 is a deficient number, since it is larger than the sum of its proper divisors (376908838).

640546202 is a wasteful number, since it uses less digits than its factorization.

640546202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101125.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 640546202 is about 25309.0142439408. The cubic root of 640546202 is about 862.0189639151.

The spelling of 640546202 in words is "six hundred forty million, five hundred forty-six thousand, two hundred two".