343445663 has 8 divisors (see below), whose sum is σ = 376572240. Its totient is φ = 310636480.

The previous prime is 343445659. The next prime is 343445681. The reversal of 343445663 is 366544343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343445663 - 2² = 343445659 is a prime.

It is a super-3 number, since 3×343445663³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343445633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77078 + ... + 81411.

It is an arithmetic number, because the mean of its divisors is an integer number (47071530).

Almost surely, 2^343445663 is an apocalyptic number.

343445663 is a deficient number, since it is larger than the sum of its proper divisors (33126577).

343445663 is a wasteful number, since it uses less digits than its factorization.

343445663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158697.

The product of its digits is 311040, while the sum is 38.

The square root of 343445663 is about 18532.2870418090. The cubic root of 343445663 is about 700.3030408988.

The spelling of 343445663 in words is "three hundred forty-three million, four hundred forty-five thousand, six hundred sixty-three".