6420175 has 12 divisors (see below), whose sum is σ = 8075376. Its totient is φ = 5062400.

The previous prime is 6420173. The next prime is 6420199. The reversal of 6420175 is 5710246.

It is not a de Polignac number, because 6420175 - 2¹ = 6420173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

6420175 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34 + ... + 3583.

It is an arithmetic number, because the mean of its divisors is an integer number (672948).

Almost surely, 2^6420175 is an apocalyptic number.

6420175 is a deficient number, since it is larger than the sum of its proper divisors (1655201).

6420175 is a wasteful number, since it uses less digits than its factorization.

6420175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 6420175 is about 2533.8064251241. The cubic root of 6420175 is about 185.8584404847.

The spelling of 6420175 in words is "six million, four hundred twenty thousand, one hundred seventy-five".