6215513065 has 8 divisors (see below), whose sum is σ = 7465651848. Its totient is φ = 4967719680.

The previous prime is 6215513053. The next prime is 6215513081. The reversal of 6215513065 is 5603155126.

It can be written as a sum of positive squares in 4 ways, for example, as 312971481 + 5902541584 = 17691^2 + 76828^2 .

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

It is not a de Polignac number, because 6215513065 - 2²⁹ = 5678642153 is a prime.

It is a super-2 number, since 2×6215513065² = 77265205322371388450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6215513065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580512 + ... + 591121.

It is an arithmetic number, because the mean of its divisors is an integer number (933206481).

Almost surely, 2^6215513065 is an apocalyptic number.

It is an amenable number.

6215513065 is a deficient number, since it is larger than the sum of its proper divisors (1250138783).

6215513065 is a wasteful number, since it uses less digits than its factorization.

6215513065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172699.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 6215513065 is about 78838.5252589113. The cubic root of 6215513065 is about 1838.6214730784.

The spelling of 6215513065 in words is "six billion, two hundred fifteen million, five hundred thirteen thousand, sixty-five".