646298112 has 160 divisors (see below), whose sum is σ = 1861434432. Its totient is φ = 198508544.

The previous prime is 646298087. The next prime is 646298113. The reversal of 646298112 is 211892646.

It is a super-3 number, since 3×646298112³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646298113) 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 15 ways as a sum of consecutive naturals, for example, 1383703 + ... + 1384169.

Almost surely, 2^646298112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646298112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930717216).

646298112 is an abundant number, since it is smaller than the sum of its proper divisors (1215136320).

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

646298112 is a wasteful number, since it uses less digits than its factorization.

646298112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 542 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 646298112 is about 25422.3939077342. The cubic root of 646298112 is about 864.5915016821.

The spelling of 646298112 in words is "six hundred forty-six million, two hundred ninety-eight thousand, one hundred twelve".