6402085 has 4 divisors (see below), whose sum is σ = 7682508. Its totient is φ = 5121664.

The previous prime is 6402079. The next prime is 6402091. The reversal of 6402085 is 5802046.

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 (6402079) and next prime (6402091).

It can be written as a sum of positive squares in 2 ways, for example, as 4761124 + 1640961 = 2182^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 6402085 - 2¹⁵ = 6369317 is a prime.

It is a Duffinian number.

6402085 is a lucky 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, 640204 + ... + 640213.

It is an arithmetic number, because the mean of its divisors is an integer number (1920627).

Almost surely, 2^6402085 is an apocalyptic number.

It is an amenable number.

6402085 is a deficient number, since it is larger than the sum of its proper divisors (1280423).

6402085 is a wasteful number, since it uses less digits than its factorization.

6402085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280422.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 6402085 is about 2530.2341788854. The cubic root of 6402085 is about 185.6837130569.

The spelling of 6402085 in words is "six million, four hundred two thousand, eighty-five".