2697964681 has 2 divisors, whose sum is σ = 2697964682. Its totient is φ = 2697964680.

The previous prime is 2697964667. The next prime is 2697964691. The reversal of 2697964681 is 1864697962.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2348274681 + 349690000 = 48459^2 + 18700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2697964681 - 2⁹ = 2697964169 is a prime.

It is a super-2 number, since 2×2697964681² = 14558026839846863522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2697964691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1348982340 + 1348982341.

It is an arithmetic number, because the mean of its divisors is an integer number (1348982341).

Almost surely, 2^2697964681 is an apocalyptic number.

It is an amenable number.

2697964681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2697964681 is an equidigital number, since it uses as much as digits as its factorization.

2697964681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 58.

The square root of 2697964681 is about 51941.9356685906. The cubic root of 2697964681 is about 1392.1266690190.

The spelling of 2697964681 in words is "two billion, six hundred ninety-seven million, nine hundred sixty-four thousand, six hundred eighty-one".