340665355 has 16 divisors (see below), whose sum is σ = 422569728. Its totient is φ = 263376000.

The previous prime is 340665341. The next prime is 340665359. The reversal of 340665355 is 553566043.

It is not a de Polignac number, because 340665355 - 2⁵ = 340665323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340665359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182125 + ... + 183985.

It is an arithmetic number, because the mean of its divisors is an integer number (26410608).

Almost surely, 2^340665355 is an apocalyptic number.

340665355 is a deficient number, since it is larger than the sum of its proper divisors (81904373).

340665355 is a wasteful number, since it uses less digits than its factorization.

340665355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 340665355 is about 18457.1220671046. The cubic root of 340665355 is about 698.4081890633.

The spelling of 340665355 in words is "three hundred forty million, six hundred sixty-five thousand, three hundred fifty-five".