340646646 has 16 divisors (see below), whose sum is σ = 721369584. Its totient is φ = 106869504.

The previous prime is 340646641. The next prime is 340646651. The reversal of 340646646 is 646646043.

It is an interprime number because it is at equal distance from previous prime (340646641) and next prime (340646651).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340646641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669735 + ... + 1669938.

It is an arithmetic number, because the mean of its divisors is an integer number (45085599).

Almost surely, 2^340646646 is an apocalyptic number.

340646646 is an abundant number, since it is smaller than the sum of its proper divisors (380722938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340646646 is a wasteful number, since it uses less digits than its factorization.

340646646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339695.

The product of its (nonzero) digits is 248832, while the sum is 39.

The square root of 340646646 is about 18456.6152368196. The cubic root of 340646646 is about 698.3954035366.

The spelling of 340646646 in words is "three hundred forty million, six hundred forty-six thousand, six hundred forty-six".