646034352 has 40 divisors (see below), whose sum is σ = 1756762560. Its totient is φ = 204010560.

The previous prime is 646034351. The next prime is 646034359. The reversal of 646034352 is 253430646.

It is not an unprimeable number, because it can be changed into a prime (646034351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353274 + ... + 355097.

It is an arithmetic number, because the mean of its divisors is an integer number (43919064).

Almost surely, 2^646034352 is an apocalyptic number.

It is an amenable number.

646034352 is an abundant number, since it is smaller than the sum of its proper divisors (1110728208).

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

646034352 is a wasteful number, since it uses less digits than its factorization.

646034352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708401 (or 708395 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 646034352 is about 25417.2058259754. The cubic root of 646034352 is about 864.4738698547.

Adding to 646034352 its reverse (253430646), we get a palindrome (899464998).

The spelling of 646034352 in words is "six hundred forty-six million, thirty-four thousand, three hundred fifty-two".