6402375 has 64 divisors (see below), whose sum is σ = 13578240. Its totient is φ = 2916000.

The previous prime is 6402329. The next prime is 6402379. The reversal of 6402375 is 5732046.

It is a happy number.

It is not a de Polignac number, because 6402375 - 2⁶ = 6402311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23490 + ... + 23760.

It is an arithmetic number, because the mean of its divisors is an integer number (212160).

Almost surely, 2^6402375 is an apocalyptic number.

6402375 is an abundant number, since it is smaller than the sum of its proper divisors (7175865).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6402375 is a wasteful number, since it uses less digits than its factorization.

6402375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 6402375 is about 2530.2914851851. The cubic root of 6402375 is about 185.6865166990.

The spelling of 6402375 in words is "six million, four hundred two thousand, three hundred seventy-five".