340340661 has 12 divisors (see below), whose sum is σ = 507461760. Its totient is φ = 219574440.

The previous prime is 340340659. The next prime is 340340669. The reversal of 340340661 is 166043043.

It is not a de Polignac number, because 340340661 - 2¹ = 340340659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340340669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609651 + ... + 610208.

It is an arithmetic number, because the mean of its divisors is an integer number (42288480).

Almost surely, 2^340340661 is an apocalyptic number.

340340661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

340340661 is a deficient number, since it is larger than the sum of its proper divisors (167121099).

340340661 is a wasteful number, since it uses less digits than its factorization.

340340661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219896 (or 1219893 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 340340661 is about 18448.3240702238. The cubic root of 340340661 is about 698.1862302513.

The spelling of 340340661 in words is "three hundred forty million, three hundred forty thousand, six hundred sixty-one".