2623223681 has 16 divisors (see below), whose sum is σ = 2929122000. Its totient is φ = 2332581888.

The previous prime is 2623223651. The next prime is 2623223717. The reversal of 2623223681 is 1863223262.

2623223681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 81450625 + 2541773056 = 9025^2 + 50416^2 .

It is not a de Polignac number, because 2623223681 - 2¹⁴ = 2623207297 is a prime.

It is a super-2 number, since 2×2623223681² = 13762604961118379522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2623223651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161525 + ... + 177021.

It is an arithmetic number, because the mean of its divisors is an integer number (183070125).

Almost surely, 2^2623223681 is an apocalyptic number.

It is an amenable number.

2623223681 is a deficient number, since it is larger than the sum of its proper divisors (305898319).

2623223681 is a wasteful number, since it uses less digits than its factorization.

2623223681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15988.

The product of its digits is 41472, while the sum is 35.

The square root of 2623223681 is about 51217.4157977538. The cubic root of 2623223681 is about 1379.1508605538.

The spelling of 2623223681 in words is "two billion, six hundred twenty-three million, two hundred twenty-three thousand, six hundred eighty-one".