2266645757 has 4 divisors (see below), whose sum is σ = 2266742940. Its totient is φ = 2266548576.

The previous prime is 2266645741. The next prime is 2266645769. The reversal of 2266645757 is 7575466622.

It is a happy number.

2266645757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1846764676 + 419881081 = 42974^2 + 20491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266645757 - 2⁴ = 2266645741 is a prime.

It is a super-2 number, since 2×2266645757² = 10275365975452206098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2266645727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9719 + ... + 68027.

It is an arithmetic number, because the mean of its divisors is an integer number (566685735).

It is a Poulet number, since it divides 2^2266645756-1.

Almost surely, 2^2266645757 is an apocalyptic number.

2266645757 is the 38873-rd pentagonal number.

It is an amenable number.

2266645757 is a deficient number, since it is larger than the sum of its proper divisors (97183).

2266645757 is an equidigital number, since it uses as much as digits as its factorization.

2266645757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97182.

The product of its digits is 4233600, while the sum is 50.

The square root of 2266645757 is about 47609.3032610224. The cubic root of 2266645757 is about 1313.5941849116.

The spelling of 2266645757 in words is "two billion, two hundred sixty-six million, six hundred forty-five thousand, seven hundred fifty-seven".