340632505 has 4 divisors (see below), whose sum is σ = 408759012. Its totient is φ = 272506000.

The previous prime is 340632493. The next prime is 340632529. The reversal of 340632505 is 505236043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169624576 + 171007929 = 13024^2 + 13077^2 .

It is not a de Polignac number, because 340632505 - 2⁵ = 340632473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34063246 + ... + 34063255.

It is an arithmetic number, because the mean of its divisors is an integer number (102189753).

Almost surely, 2^340632505 is an apocalyptic number.

It is an amenable number.

340632505 is a deficient number, since it is larger than the sum of its proper divisors (68126507).

340632505 is an equidigital number, since it uses as much as digits as its factorization.

340632505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68126506.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 340632505 is about 18456.2321452674. The cubic root of 340632505 is about 698.3857394206.

Adding to 340632505 its reverse (505236043), we get a palindrome (845868548).

The spelling of 340632505 in words is "three hundred forty million, six hundred thirty-two thousand, five hundred five".