6340885 has 4 divisors (see below), whose sum is σ = 7609068. Its totient is φ = 5072704.

The previous prime is 6340883. The next prime is 6340891. The reversal of 6340885 is 5880436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4153444 + 2187441 = 2038^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 6340885 - 2¹ = 6340883 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6340885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340883) 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, 634084 + ... + 634093.

It is an arithmetic number, because the mean of its divisors is an integer number (1902267).

Almost surely, 2^6340885 is an apocalyptic number.

It is an amenable number.

6340885 is a deficient number, since it is larger than the sum of its proper divisors (1268183).

6340885 is a wasteful number, since it uses less digits than its factorization.

6340885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268182.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 6340885 is about 2518.1113954708. Note that the first 3 decimals coincide. The cubic root of 6340885 is about 185.0901435541.

It can be divided in two parts, 6340 and 885, that added together give a square (7225 = 85²).

The spelling of 6340885 in words is "six million, three hundred forty thousand, eight hundred eighty-five".