646136202 has 8 divisors (see below), whose sum is σ = 1292272416. Its totient is φ = 215378732.

The previous prime is 646136167. The next prime is 646136203. The reversal of 646136202 is 202631646.

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

646136202 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 646136202.

It is not an unprimeable number, because it can be changed into a prime (646136203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53844678 + ... + 53844689.

It is an arithmetic number, because the mean of its divisors is an integer number (161534052).

Almost surely, 2^646136202 is an apocalyptic number.

646136202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646136202 is a wasteful number, since it uses less digits than its factorization.

646136202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107689372.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 646136202 is about 25419.2093110702. The cubic root of 646136202 is about 864.5192967667.

Adding to 646136202 its reverse (202631646), we get a palindrome (848767848).

The spelling of 646136202 in words is "six hundred forty-six million, one hundred thirty-six thousand, two hundred two".