6377985 has 24 divisors (see below), whose sum is σ = 11117184. Its totient is φ = 3382560.

The previous prime is 6377983. The next prime is 6377993. The reversal of 6377985 is 5897736.

It is a happy number.

6377985 is a `hidden beast` number, since 637 + 7 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 6377985 - 2¹ = 6377983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 6⁶ + 3⁷ + 7 + 7⁸ + 9⁶ + 8⁵ + 5³ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6377985.

It is not an unprimeable number, because it can be changed into a prime (6377981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11934 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (463216).

Almost surely, 2^6377985 is an apocalyptic number.

It is an amenable number.

6377985 is a deficient number, since it is larger than the sum of its proper divisors (4739199).

6377985 is a wasteful number, since it uses less digits than its factorization.

6377985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 802 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 6377985 is about 2525.4672834943. The cubic root of 6377985 is about 185.4504242426.

Subtracting from 6377985 its reverse (5897736), we obtain a square (480249 = 693²).

The spelling of 6377985 in words is "six million, three hundred seventy-seven thousand, nine hundred eighty-five".