340584 has 32 divisors (see below), whose sum is σ = 889920. Its totient is φ = 108416.

The previous prime is 340583. The next prime is 340591. The reversal of 340584 is 485043.

It is a happy number.

340584 is nontrivially palindromic in base 5.

It is a super-2 number, since 2×340584² = 231994922112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 3⁵ + 4³ + 5⁷ + 0 + 8 + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (340583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244 + ... + 860.

It is an arithmetic number, because the mean of its divisors is an integer number (27810).

2³⁴⁰⁵⁸⁴ 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 340584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444960).

340584 is an abundant number, since it is smaller than the sum of its proper divisors (549336).

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

340584 is a wasteful number, since it uses less digits than its factorization.

340584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 340584 is about 583.5957504986. The cubic root of 340584 is about 69.8352588534.

The spelling of 340584 in words is "three hundred forty thousand, five hundred eighty-four".