2601785268 has 18 divisors (see below), whose sum is σ = 6576735074. Its totient is φ = 867261744.

The previous prime is 2601785239. The next prime is 2601785279. The reversal of 2601785268 is 8625871062.

It can be written as a sum of positive squares in only one way, i.e., 2387104164 + 214681104 = 48858^2 + 14652^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36135871 + ... + 36135942.

Almost surely, 2^2601785268 is an apocalyptic number.

It is an amenable number.

2601785268 is an abundant number, since it is smaller than the sum of its proper divisors (3974949806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2601785268 is a wasteful number, since it uses less digits than its factorization.

2601785268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72271823 (or 72271818 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2601785268 is about 51007.6981248909. The cubic root of 2601785268 is about 1375.3835215343.

The spelling of 2601785268 in words is "two billion, six hundred one million, seven hundred eighty-five thousand, two hundred sixty-eight".