697743082481 has 2 divisors, whose sum is σ = 697743082482. Its totient is φ = 697743082480.

The previous prime is 697743082429. The next prime is 697743082499. The reversal of 697743082481 is 184280347796.

697743082481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419469952225 + 278273130256 = 647665^2 + 527516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697743082481 is a prime.

It is a super-2 number, since 2×697743082481² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 697743082481.

It is not a weakly prime, because it can be changed into another prime (697743082681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348871541240 + 348871541241.

It is an arithmetic number, because the mean of its divisors is an integer number (348871541241).

Almost surely, 2^697743082481 is an apocalyptic number.

It is an amenable number.

697743082481 is a deficient number, since it is larger than the sum of its proper divisors (1).

697743082481 is an equidigital number, since it uses as much as digits as its factorization.

697743082481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 697743082481 in words is "six hundred ninety-seven billion, seven hundred forty-three million, eighty-two thousand, four hundred eighty-one".