340612645 has 4 divisors (see below), whose sum is σ = 408735180. Its totient is φ = 272490112.

The previous prime is 340612633. The next prime is 340612667. The reversal of 340612645 is 546216043.

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 262148481 + 78464164 = 16191^2 + 8858^2 .

It is a cyclic number.

It is not a de Polignac number, because 340612645 - 2¹⁷ = 340481573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34061260 + ... + 34061269.

It is an arithmetic number, because the mean of its divisors is an integer number (102183795).

Almost surely, 2^340612645 is an apocalyptic number.

It is an amenable number.

340612645 is a deficient number, since it is larger than the sum of its proper divisors (68122535).

340612645 is an equidigital number, since it uses as much as digits as its factorization.

340612645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68122534.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 340612645 is about 18455.6941077815. The cubic root of 340612645 is about 698.3721664252.

Adding to 340612645 its reverse (546216043), we get a palindrome (886828688).

The spelling of 340612645 in words is "three hundred forty million, six hundred twelve thousand, six hundred forty-five".