340650 has 36 divisors (see below), whose sum is σ = 916422. Its totient is φ = 90720.

The previous prime is 340649. The next prime is 340657. The reversal of 340650 is 56043.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 269361 + 71289 = 519^2 + 267^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (340657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72 + ... + 828.

2³⁴⁰⁶⁵⁰ is an apocalyptic number.

340650 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 340650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458211).

340650 is an abundant number, since it is smaller than the sum of its proper divisors (575772).

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

340650 is a wasteful number, since it uses less digits than its factorization.

340650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 340650 is about 583.6522937503. The cubic root of 340650 is about 69.8397695658.

Adding to 340650 its reverse (56043), we get a palindrome (396693).

It can be divided in two parts, 340 and 650, that added together give a triangular number (990 = T₄₄).

The spelling of 340650 in words is "three hundred forty thousand, six hundred fifty".