6746405 has 4 divisors (see below), whose sum is σ = 8095692. Its totient is φ = 5397120.

The previous prime is 6746401. The next prime is 6746449. The reversal of 6746405 is 5046476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1985281 + 4761124 = 1409^2 + 2182^2 .

It is not a de Polignac number, because 6746405 - 2² = 6746401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 674636 + ... + 674645.

It is an arithmetic number, because the mean of its divisors is an integer number (2023923).

Almost surely, 2^6746405 is an apocalyptic number.

It is an amenable number.

6746405 is a deficient number, since it is larger than the sum of its proper divisors (1349287).

6746405 is a wasteful number, since it uses less digits than its factorization.

6746405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349286.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 6746405 is about 2597.3842611366. The cubic root of 6746405 is about 188.9546002952.

The spelling of 6746405 in words is "six million, seven hundred forty-six thousand, four hundred five".