6872515 has 16 divisors (see below), whose sum is σ = 9269568. Its totient is φ = 4853376.

The previous prime is 6872513. The next prime is 6872521. The reversal of 6872515 is 5152786.

It is a cyclic number.

It is not a de Polignac number, because 6872515 - 2¹ = 6872513 is a prime.

It is a Duffinian number.

6872515 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6872513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (579348).

Almost surely, 2^6872515 is an apocalyptic number.

6872515 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6872515 is a deficient number, since it is larger than the sum of its proper divisors (2397053).

6872515 is a wasteful number, since it uses less digits than its factorization.

6872515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638.

The product of its digits is 16800, while the sum is 34.

The square root of 6872515 is about 2621.5482066901. The cubic root of 6872515 is about 190.1247103697.

The spelling of 6872515 in words is "six million, eight hundred seventy-two thousand, five hundred fifteen".