2623562681 has 2 divisors, whose sum is σ = 2623562682. Its totient is φ = 2623562680.

The previous prime is 2623562657. The next prime is 2623562713. The reversal of 2623562681 is 1862653262.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2069431081 + 554131600 = 45491^2 + 23540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2623562681 - 2²⁶ = 2556453817 is a prime.

It is a super-2 number, since 2×2623562681² = 13766162282271815522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2623562611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311781340 + 1311781341.

It is an arithmetic number, because the mean of its divisors is an integer number (1311781341).

Almost surely, 2^2623562681 is an apocalyptic number.

It is an amenable number.

2623562681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623562681 is an equidigital number, since it uses as much as digits as its factorization.

2623562681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 2623562681 is about 51220.7251120091. The cubic root of 2623562681 is about 1379.2102673575.

The spelling of 2623562681 in words is "two billion, six hundred twenty-three million, five hundred sixty-two thousand, six hundred eighty-one".