343396638 has 64 divisors (see below), whose sum is σ = 835833600. Its totient is φ = 103857120.

The previous prime is 343396637. The next prime is 343396673. The reversal of 343396638 is 836693343.

343396638 is a `hidden beast` number, since 3 + 4 + 3 + 3 + 9 + 6 + 638 = 666.

343396638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 343396593 and 343396602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343396637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37273 + ... + 45563.

It is an arithmetic number, because the mean of its divisors is an integer number (13059900).

Almost surely, 2^343396638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343396638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417916800).

343396638 is an abundant number, since it is smaller than the sum of its proper divisors (492436962).

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

343396638 is a wasteful number, since it uses less digits than its factorization.

343396638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8374 (or 8368 counting only the distinct ones).

The product of its digits is 839808, while the sum is 45.

The square root of 343396638 is about 18530.9643030254. The cubic root of 343396638 is about 700.2697178301.

The spelling of 343396638 in words is "three hundred forty-three million, three hundred ninety-six thousand, six hundred thirty-eight".