2261655770 has 48 divisors (see below), whose sum is σ = 4629086280. Its totient is φ = 794048640.

The previous prime is 2261655763. The next prime is 2261655811. The reversal of 2261655770 is 775561622.

It can be written as a sum of positive squares in 4 ways, for example, as 1029575569 + 1232080201 = 32087^2 + 35101^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2864 + ... + 67316.

Almost surely, 2^2261655770 is an apocalyptic number.

2261655770 is an abundant number, since it is smaller than the sum of its proper divisors (2367430510).

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

2261655770 is a wasteful number, since it uses less digits than its factorization.

2261655770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64511 (or 64500 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 2261655770 is about 47556.8687993648. The cubic root of 2261655770 is about 1312.6295239673.

The spelling of 2261655770 in words is "two billion, two hundred sixty-one million, six hundred fifty-five thousand, seven hundred seventy".