2266781764 has 24 divisors (see below), whose sum is σ = 4387475288. Its totient is φ = 1017930240.

The previous prime is 2266781749. The next prime is 2266781771. The reversal of 2266781764 is 4671876622.

It can be written as a sum of positive squares in 4 ways, for example, as 318265600 + 1948516164 = 17840^2 + 44142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587157 + ... + 591004.

Almost surely, 2^2266781764 is an apocalyptic number.

It is an amenable number.

2266781764 is a deficient number, since it is larger than the sum of its proper divisors (2120693524).

2266781764 is a wasteful number, since it uses less digits than its factorization.

2266781764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178215 (or 1178213 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 2266781764 is about 47610.7316053849. The cubic root of 2266781764 is about 1313.6204578644.

The spelling of 2266781764 in words is "two billion, two hundred sixty-six million, seven hundred eighty-one thousand, seven hundred sixty-four".