340645261 has 8 divisors (see below), whose sum is σ = 380677248. Its totient is φ = 302124000.

The previous prime is 340645241. The next prime is 340645309. The reversal of 340645261 is 162546043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340645261 - 2¹¹ = 340643213 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 (340645231) 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, 377205 + ... + 378106.

It is an arithmetic number, because the mean of its divisors is an integer number (47584656).

Almost surely, 2^340645261 is an apocalyptic number.

It is an amenable number.

340645261 is a deficient number, since it is larger than the sum of its proper divisors (40031987).

340645261 is a wasteful number, since it uses less digits than its factorization.

340645261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755363.

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

The square root of 340645261 is about 18456.5777163590. The cubic root of 340645261 is about 698.3944570241.

The spelling of 340645261 in words is "three hundred forty million, six hundred forty-five thousand, two hundred sixty-one".