8343640 has 16 divisors (see below), whose sum is σ = 18773280. Its totient is φ = 3337440.

The previous prime is 8343613. The next prime is 8343653. The reversal of 8343640 is 463438.

It is a junction number, because it is equal to n+sod(n) for n = 8343599 and 8343608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104256 + ... + 104335.

It is an arithmetic number, because the mean of its divisors is an integer number (1173330).

Almost surely, 2^8343640 is an apocalyptic number.

It is an amenable number.

8343640 is an abundant number, since it is smaller than the sum of its proper divisors (10429640).

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

8343640 is a wasteful number, since it uses less digits than its factorization.

8343640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208602 (or 208598 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 8343640 is about 2888.5359613479. The cubic root of 8343640 is about 202.8236150557.

The spelling of 8343640 in words is "eight million, three hundred forty-three thousand, six hundred forty".