6405922 has 8 divisors (see below), whose sum is σ = 9843372. Its totient is φ = 3124800.

The previous prime is 6405913. The next prime is 6405929. The reversal of 6405922 is 2295046.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 408321 = 2449^2 + 639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6405929) 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, 38979 + ... + 39142.

Almost surely, 2^6405922 is an apocalyptic number.

6405922 is a deficient number, since it is larger than the sum of its proper divisors (3437450).

6405922 is a wasteful number, since it uses less digits than its factorization.

6405922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78164.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6405922 is about 2530.9922955236. The cubic root of 6405922 is about 185.7208012930.

The spelling of 6405922 in words is "six million, four hundred five thousand, nine hundred twenty-two".