6791405 has 4 divisors (see below), whose sum is σ = 8149692. Its totient is φ = 5433120.

The previous prime is 6791399. The next prime is 6791429. The reversal of 6791405 is 5041976.

It is a happy number.

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 2477476 + 4313929 = 1574^2 + 2077^2 .

It is not a de Polignac number, because 6791405 - 2⁸ = 6791149 is a prime.

It is a super-2 number, since 2×6791405² = 92246363748050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679136 + ... + 679145.

It is an arithmetic number, because the mean of its divisors is an integer number (2037423).

Almost surely, 2^6791405 is an apocalyptic number.

It is an amenable number.

6791405 is a deficient number, since it is larger than the sum of its proper divisors (1358287).

6791405 is a wasteful number, since it uses less digits than its factorization.

6791405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358286.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 6791405 is about 2606.0324249710. The cubic root of 6791405 is about 189.3737925036.

The spelling of 6791405 in words is "six million, seven hundred ninety-one thousand, four hundred five".