6681015 has 48 divisors (see below), whose sum is σ = 13087200. Its totient is φ = 3231360.

The previous prime is 6681013. The next prime is 6681019. The reversal of 6681015 is 5101866.

It is not a de Polignac number, because 6681015 - 2¹ = 6681013 is a prime.

It is a super-2 number, since 2×6681015² = 89271922860450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 6681015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16131 + ... + 16539.

It is an arithmetic number, because the mean of its divisors is an integer number (272650).

Almost surely, 2^6681015 is an apocalyptic number.

6681015 is a deficient number, since it is larger than the sum of its proper divisors (6406185).

6681015 is a wasteful number, since it uses less digits than its factorization.

6681015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 6681015 is about 2584.7659468509. The cubic root of 6681015 is about 188.3421320103.

The spelling of 6681015 in words is "six million, six hundred eighty-one thousand, fifteen".