2265771620 has 48 divisors (see below), whose sum is σ = 5440632960. Its totient is φ = 776438784.

The previous prime is 2265771619. The next prime is 2265771691. The reversal of 2265771620 is 261775622.

It is a happy 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, 441107 + ... + 446213.

It is an arithmetic number, because the mean of its divisors is an integer number (113346520).

Almost surely, 2^2265771620 is an apocalyptic number.

2265771620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2265771620 is an abundant number, since it is smaller than the sum of its proper divisors (3174861340).

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

2265771620 is a wasteful number, since it uses less digits than its factorization.

2265771620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292 (or 8290 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2265771620 is about 47600.1220586670. The cubic root of 2265771620 is about 1313.4252996888.

The spelling of 2265771620 in words is "two billion, two hundred sixty-five million, seven hundred seventy-one thousand, six hundred twenty".