6870521 has 8 divisors (see below), whose sum is σ = 7868544. Its totient is φ = 5876640.

The previous prime is 6870509. The next prime is 6870527. The reversal of 6870521 is 1250786.

6870521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6870521 - 2²² = 2676217 is a prime.

It is a super-2 number, since 2×6870521² = 94408117622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6870527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4541 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (983568).

Almost surely, 2^6870521 is an apocalyptic number.

It is an amenable number.

6870521 is a deficient number, since it is larger than the sum of its proper divisors (998023).

6870521 is a wasteful number, since it uses less digits than its factorization.

6870521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 6870521 is about 2621.1678694811. The cubic root of 6870521 is about 190.1063209182.

The spelling of 6870521 in words is "six million, eight hundred seventy thousand, five hundred twenty-one".