340506517 has 16 divisors (see below), whose sum is σ = 379154160. Its totient is φ = 303782400.

The previous prime is 340506497. The next prime is 340506539. The reversal of 340506517 is 715605043.

It can be written as a sum of positive squares in 8 ways, for example, as 51710481 + 288796036 = 7191^2 + 16994^2 .

It is a cyclic number.

It is not a de Polignac number, because 340506517 - 2¹¹ = 340504469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340506577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55167 + ... + 61027.

It is an arithmetic number, because the mean of its divisors is an integer number (23697135).

Almost surely, 2^340506517 is an apocalyptic number.

It is an amenable number.

340506517 is a deficient number, since it is larger than the sum of its proper divisors (38647643).

340506517 is a wasteful number, since it uses less digits than its factorization.

340506517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 340506517 is about 18452.8186735794. The cubic root of 340506517 is about 698.2996260175.

The spelling of 340506517 in words is "three hundred forty million, five hundred six thousand, five hundred seventeen".