6734409 has 32 divisors (see below), whose sum is σ = 10506240. Its totient is φ = 3796800.

The previous prime is 6734401. The next prime is 6734443. The reversal of 6734409 is 9044376.

It is not a de Polignac number, because 6734409 - 2³ = 6734401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 6734409.

It is not an unprimeable number, because it can be changed into a prime (6734401) 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, 29554 + ... + 29780.

It is an arithmetic number, because the mean of its divisors is an integer number (328320).

Almost surely, 2^6734409 is an apocalyptic number.

It is an amenable number.

6734409 is a deficient number, since it is larger than the sum of its proper divisors (3771831).

6734409 is a wasteful number, since it uses less digits than its factorization.

6734409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 6734409 is about 2595.0739873846. The cubic root of 6734409 is about 188.8425384286.

Subtracting from 6734409 its sum of digits (33), we obtain a palindrome (6734376).

The spelling of 6734409 in words is "six million, seven hundred thirty-four thousand, four hundred nine".