6746409 has 12 divisors (see below), whose sum is σ = 10106096. Its totient is φ = 4497444.

The previous prime is 6746401. The next prime is 6746449. The reversal of 6746409 is 9046476.

6746409 is a `hidden beast` number, since 6 + 7 + 4 + 640 + 9 = 666.

It is not a de Polignac number, because 6746409 - 2³ = 6746401 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (6746401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13639 + ... + 14124.

Almost surely, 2^6746409 is an apocalyptic number.

It is an amenable number.

6746409 is a deficient number, since it is larger than the sum of its proper divisors (3359687).

6746409 is an equidigital number, since it uses as much as digits as its factorization.

6746409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27778 (or 27766 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 6746409 is about 2597.3850311419. The cubic root of 6746409 is about 188.9546376394.

The spelling of 6746409 in words is "six million, seven hundred forty-six thousand, four hundred nine".