6809406 has 24 divisors (see below), whose sum is σ = 14013720. Its totient is φ = 2205792.

The previous prime is 6809393. The next prime is 6809423. The reversal of 6809406 is 6049086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7800 + ... + 8628.

It is an arithmetic number, because the mean of its divisors is an integer number (583905).

Almost surely, 2^6809406 is an apocalyptic number.

6809406 is an abundant number, since it is smaller than the sum of its proper divisors (7204314).

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

6809406 is a wasteful number, since it uses less digits than its factorization.

6809406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 6809406 is about 2609.4838570108. The cubic root of 6809406 is about 189.5409601821.

The spelling of 6809406 in words is "six million, eight hundred nine thousand, four hundred six".