6340215 has 16 divisors (see below), whose sum is σ = 11593728. Its totient is φ = 2898336.

The previous prime is 6340193. The next prime is 6340219. The reversal of 6340215 is 5120436.

It is a happy number.

It is not a de Polignac number, because 6340215 - 2⁹ = 6339703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

6340215 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6340191 and 6340200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340219) 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, 30087 + ... + 30296.

It is an arithmetic number, because the mean of its divisors is an integer number (724608).

Almost surely, 2^6340215 is an apocalyptic number.

6340215 is a deficient number, since it is larger than the sum of its proper divisors (5253513).

6340215 is a wasteful number, since it uses less digits than its factorization.

6340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60398.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 6340215 is about 2517.9783557449. The cubic root of 6340215 is about 185.0836242347.

It can be divided in two parts, 6340 and 215, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 6340215 in words is "six million, three hundred forty thousand, two hundred fifteen".