605621103261 has 16 divisors (see below), whose sum is σ = 828303235200. Its totient is φ = 393369697280.

The previous prime is 605621103239. The next prime is 605621103289. The reversal of 605621103261 is 162301126506.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605621103261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605621103211) 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, 3222036 + ... + 3404813.

It is an arithmetic number, because the mean of its divisors is an integer number (51768952200).

Almost surely, 2^605621103261 is an apocalyptic number.

It is an amenable number.

605621103261 is a deficient number, since it is larger than the sum of its proper divisors (222682131939).

605621103261 is a wasteful number, since it uses less digits than its factorization.

605621103261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627636.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 605621103261 its reverse (162301126506), we get a palindrome (767922229767).

The spelling of 605621103261 in words is "six hundred five billion, six hundred twenty-one million, one hundred three thousand, two hundred sixty-one".