343403661 has 8 divisors (see below), whose sum is σ = 458581824. Its totient is φ = 228580640.

The previous prime is 343403653. The next prime is 343403681. The reversal of 343403661 is 166304343.

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 343403661 - 2³ = 343403653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343403611) 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, 86520 + ... + 90401.

It is an arithmetic number, because the mean of its divisors is an integer number (57322728).

Almost surely, 2^343403661 is an apocalyptic number.

It is an amenable number.

343403661 is a deficient number, since it is larger than the sum of its proper divisors (115178163).

343403661 is a wasteful number, since it uses less digits than its factorization.

343403661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177571.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 343403661 is about 18531.1537957031. The cubic root of 343403661 is about 700.2744916690.

The spelling of 343403661 in words is "three hundred forty-three million, four hundred three thousand, six hundred sixty-one".