340660849 has 3 divisors (see below), whose sum is σ = 340679307. Its totient is φ = 340642392.

The previous prime is 340660819. The next prime is 340660907. The reversal of 340660849 is 948066043.

The square root of 340660849 is 18457.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 948066043 = 757 ⋅1252399.

It can be written as a sum of positive squares in only one way, i.e., 251698225 + 88962624 = 15865^2 + 9432^2 .

It is not a de Polignac number, because 340660849 - 2⁷ = 340660721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340660819) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9229 + ... + 27685.

It is an arithmetic number, because the mean of its divisors is an integer number (113559769).

Almost surely, 2^340660849 is an apocalyptic number.

340660849 is the 18457-th square number.

340660849 is the 9229-th centered octagonal number.

It is an amenable number.

340660849 is a deficient number, since it is larger than the sum of its proper divisors (18458).

340660849 is an frugal number, since it uses more digits than its factorization.

340660849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36914 (or 18457 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The cubic root of 340660849 is about 698.4051097548.

The spelling of 340660849 in words is "three hundred forty million, six hundred sixty thousand, eight hundred forty-nine".