6402187 has 4 divisors (see below), whose sum is σ = 6984216. Its totient is φ = 5820160.

The previous prime is 6402181. The next prime is 6402203. The reversal of 6402187 is 7812046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6402187 - 2⁷ = 6402059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6402181) 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, 290998 + ... + 291019.

It is an arithmetic number, because the mean of its divisors is an integer number (1746054).

Almost surely, 2^6402187 is an apocalyptic number.

6402187 is a deficient number, since it is larger than the sum of its proper divisors (582029).

6402187 is a wasteful number, since it uses less digits than its factorization.

6402187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582028.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 6402187 is about 2530.2543350422. The cubic root of 6402187 is about 185.6846991752.

The spelling of 6402187 in words is "six million, four hundred two thousand, one hundred eighty-seven".