6266641565 has 16 divisors (see below), whose sum is σ = 7690493808. Its totient is φ = 4900847616.

The previous prime is 6266641559. The next prime is 6266641607. The reversal of 6266641565 is 5651466626.

It can be written as a sum of positive squares in 8 ways, for example, as 1897299364 + 4369342201 = 43558^2 + 66101^2 .

It is a cyclic number.

It is not a de Polignac number, because 6266641565 - 2⁸ = 6266641309 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 34724 + ... + 117213.

It is an arithmetic number, because the mean of its divisors is an integer number (480655863).

Almost surely, 2^6266641565 is an apocalyptic number.

It is an amenable number.

6266641565 is a deficient number, since it is larger than the sum of its proper divisors (1423852243).

6266641565 is a wasteful number, since it uses less digits than its factorization.

6266641565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152128.

The product of its digits is 1555200, while the sum is 47.

The square root of 6266641565 is about 79162.1220344680. The cubic root of 6266641565 is about 1843.6491817476.

The spelling of 6266641565 in words is "six billion, two hundred sixty-six million, six hundred forty-one thousand, five hundred sixty-five".