340220660 has 144 divisors (see below), whose sum is σ = 850010112. Its totient is φ = 113817600.

The previous prime is 340220659. The next prime is 340220693. The reversal of 340220660 is 66022043.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1781165 + ... + 1781355.

It is an arithmetic number, because the mean of its divisors is an integer number (5902848).

Almost surely, 2^340220660 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 340220660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425005056).

340220660 is an abundant number, since it is smaller than the sum of its proper divisors (509789452).

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

340220660 is a wasteful number, since it uses less digits than its factorization.

340220660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 340220660 is about 18445.0714284331. The cubic root of 340220660 is about 698.1041625817.

The spelling of 340220660 in words is "three hundred forty million, two hundred twenty thousand, six hundred sixty".