6422405 has 16 divisors (see below), whose sum is σ = 8774784. Its totient is φ = 4466880.

The previous prime is 6422387. The next prime is 6422407. The reversal of 6422405 is 5042246.

It is not a de Polignac number, because 6422405 - 2¹⁶ = 6356869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6422407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (548424).

Almost surely, 2^6422405 is an apocalyptic number.

It is an amenable number.

6422405 is a deficient number, since it is larger than the sum of its proper divisors (2352379).

6422405 is a wasteful number, since it uses less digits than its factorization.

6422405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 6422405 is about 2534.2464363199. The cubic root of 6422405 is about 185.8799568423.

The spelling of 6422405 in words is "six million, four hundred twenty-two thousand, four hundred five".