6387870 has 32 divisors (see below), whose sum is σ = 15552000. Its totient is φ = 1678880.

The previous prime is 6387863. The next prime is 6387877. The reversal of 6387870 is 787836.

It is an interprime number because it is at equal distance from previous prime (6387863) and next prime (6387877).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6387877) 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, 631 + ... + 3629.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^6387870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6387870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7776000).

6387870 is an abundant number, since it is smaller than the sum of its proper divisors (9164130).

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

6387870 is a wasteful number, since it uses less digits than its factorization.

6387870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 6387870 is about 2527.4235893494. The cubic root of 6387870 is about 185.5461823439.

The spelling of 6387870 in words is "six million, three hundred eighty-seven thousand, eight hundred seventy".