2267655781 has 8 divisors (see below), whose sum is σ = 2275822080. Its totient is φ = 2259505248.

The previous prime is 2267655763. The next prime is 2267655799. The reversal of 2267655781 is 1875567622.

It is a happy number.

2267655781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2267655763) and next prime (2267655799).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2267655781 - 2⁵ = 2267655749 is a prime.

It is a super-2 number, since 2×2267655781² = 10284525482205439922, 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 (2267655881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334140 + ... + 340858.

It is an arithmetic number, because the mean of its divisors is an integer number (284477760).

Almost surely, 2^2267655781 is an apocalyptic number.

It is an amenable number.

2267655781 is a deficient number, since it is larger than the sum of its proper divisors (8166299).

2267655781 is an equidigital number, since it uses as much as digits as its factorization.

2267655781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883.

The product of its digits is 1411200, while the sum is 49.

The square root of 2267655781 is about 47619.9095022240. The cubic root of 2267655781 is about 1313.7892697454.

The spelling of 2267655781 in words is "two billion, two hundred sixty-seven million, six hundred fifty-five thousand, seven hundred eighty-one".