6215013 has 36 divisors (see below), whose sum is σ = 11070540. Its totient is φ = 3338496.

The previous prime is 6214993. The next prime is 6215017. The reversal of 6215013 is 3105126.

It can be written as a sum of positive squares in 2 ways, for example, as 4235364 + 1979649 = 2058^2 + 1407^2 .

It is not a de Polignac number, because 6215013 - 2⁵ = 6214981 is a prime.

It is an Ulam number.

6215013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6215017) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7083 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (307515).

Almost surely, 2^6215013 is an apocalyptic number.

6215013 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6215013 is a deficient number, since it is larger than the sum of its proper divisors (4855527).

6215013 is a wasteful number, since it uses less digits than its factorization.

6215013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 6215013 is about 2492.9927797729. The cubic root of 6215013 is about 183.8572163397.

The spelling of 6215013 in words is "six million, two hundred fifteen thousand, thirteen".