340998 has 32 divisors (see below), whose sum is σ = 815616. Its totient is φ = 92928.

The previous prime is 340979. The next prime is 340999. The reversal of 340998 is 899043.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340999) by changing a digit.

340998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (25488).

2³⁴⁰⁹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407808).

340998 is an abundant number, since it is smaller than the sum of its proper divisors (474618).

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

340998 is a wasteful number, since it uses less digits than its factorization.

340998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 340998 is about 583.9503403544. The cubic root of 340998 is about 69.8635436920.

The spelling of 340998 in words is "three hundred forty thousand, nine hundred ninety-eight".