6331405 has 4 divisors (see below), whose sum is σ = 7597692. Its totient is φ = 5065120.

The previous prime is 6331399. The next prime is 6331411. The reversal of 6331405 is 5041336.

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

It is an interprime number because it is at equal distance from previous prime (6331399) and next prime (6331411).

It can be written as a sum of positive squares in 2 ways, for example, as 4541161 + 1790244 = 2131^2 + 1338^2 .

It is not a de Polignac number, because 6331405 - 2¹⁷ = 6200333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633136 + ... + 633145.

It is an arithmetic number, because the mean of its divisors is an integer number (1899423).

Almost surely, 2^6331405 is an apocalyptic number.

It is an amenable number.

6331405 is a deficient number, since it is larger than the sum of its proper divisors (1266287).

6331405 is a wasteful number, since it uses less digits than its factorization.

6331405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266286.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 6331405 is about 2516.2283282723. The cubic root of 6331405 is about 184.9978572920.

The spelling of 6331405 in words is "six million, three hundred thirty-one thousand, four hundred five".