6441015 has 16 divisors (see below), whose sum is σ = 11778048. Its totient is φ = 2944416.

The previous prime is 6440999. The next prime is 6441031. The reversal of 6441015 is 5101446.

It is an interprime number because it is at equal distance from previous prime (6440999) and next prime (6441031).

It is not a de Polignac number, because 6441015 - 2⁴ = 6440999 is a prime.

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

6441015 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6440982 and 6441000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30567 + ... + 30776.

It is an arithmetic number, because the mean of its divisors is an integer number (736128).

Almost surely, 2^6441015 is an apocalyptic number.

6441015 is a deficient number, since it is larger than the sum of its proper divisors (5337033).

6441015 is a wasteful number, since it uses less digits than its factorization.

6441015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61358.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 6441015 is about 2537.9154832263. The cubic root of 6441015 is about 186.0593231978.

The spelling of 6441015 in words is "six million, four hundred forty-one thousand, fifteen".