6245605561 has 16 divisors (see below), whose sum is σ = 6963284160. Its totient is φ = 5562123840.

The previous prime is 6245605547. The next prime is 6245605567. The reversal of 6245605561 is 1655065426.

It is not a de Polignac number, because 6245605561 - 2⁹ = 6245605049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6245605567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553506 + ... + 564676.

It is an arithmetic number, because the mean of its divisors is an integer number (435205260).

Almost surely, 2^6245605561 is an apocalyptic number.

It is an amenable number.

6245605561 is a deficient number, since it is larger than the sum of its proper divisors (717678599).

6245605561 is a wasteful number, since it uses less digits than its factorization.

6245605561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 6245605561 is about 79029.1437445706. The cubic root of 6245605561 is about 1841.5839347214.

The spelling of 6245605561 in words is "six billion, two hundred forty-five million, six hundred five thousand, five hundred sixty-one".