343645650 has 144 divisors (see below), whose sum is σ = 1011933000. Its totient is φ = 83220480.

The previous prime is 343645597. The next prime is 343645657. The reversal of 343645650 is 56546343.

343645650 is a `hidden beast` number, since 3 + 4 + 3 + 645 + 6 + 5 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 35748441 + 307897209 = 5979^2 + 17547^2 .

It is a super-3 number, since 3×343645650³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (343645657) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 221076 + ... + 222624.

Almost surely, 2^343645650 is an apocalyptic number.

343645650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 343645650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505966500).

343645650 is an abundant number, since it is smaller than the sum of its proper divisors (668287350).

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

343645650 is a wasteful number, since it uses less digits than its factorization.

343645650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 343645650 is about 18537.6818939154. The cubic root of 343645650 is about 700.4389423861.

The spelling of 343645650 in words is "three hundred forty-three million, six hundred forty-five thousand, six hundred fifty".