2207574895681 has 9 divisors (see below), whose sum is σ = 2211681813411. Its totient is φ = 2203475598312.

The previous prime is 2207574895649. The next prime is 2207574895703. The reversal of 2207574895681 is 1865984757022.

The square root of 2207574895681 is 1485791.

It is a perfect power (a square), and thus also a powerful number.

2207574895681 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 only one way, i.e., 2159650680625 + 47924215056 = 1469575^2 + 218916^2 .

It is not a de Polignac number, because 2207574895681 - 2⁵ = 2207574895649 is a prime.

It is a super-2 number, since 2×2207574895681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2207574895601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1089083790 + ... + 1089085816.

Almost surely, 2^{2207574895681} is an apocalyptic number.

2207574895681 is the 1485791-st square number.

2207574895681 is the 742896-th centered octagonal number.

It is an amenable number.

2207574895681 is a deficient number, since it is larger than the sum of its proper divisors (4106917730).

2207574895681 is an frugal number, since it uses more digits than its factorization.

2207574895681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5520 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 64.

Multiplying 2207574895681 by its sum of digits (64), we get a square (141284793323584 = 11886328²).

The spelling of 2207574895681 in words is "two trillion, two hundred seven billion, five hundred seventy-four million, eight hundred ninety-five thousand, six hundred eighty-one".