697872722401 has 2 divisors, whose sum is σ = 697872722402. Its totient is φ = 697872722400.

The previous prime is 697872722389. The next prime is 697872722423. The reversal of 697872722401 is 104227278796.

697872722401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 642987478225 + 54885244176 = 801865^2 + 234276^2 .

It is a cyclic number.

It is not a de Polignac number, because 697872722401 - 2⁵ = 697872722369 is a prime.

It is not a weakly prime, because it can be changed into another prime (697872722431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348936361200 + 348936361201.

It is an arithmetic number, because the mean of its divisors is an integer number (348936361201).

Almost surely, 2^697872722401 is an apocalyptic number.

It is an amenable number.

697872722401 is a deficient number, since it is larger than the sum of its proper divisors (1).

697872722401 is an equidigital number, since it uses as much as digits as its factorization.

697872722401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 697872722401 in words is "six hundred ninety-seven billion, eight hundred seventy-two million, seven hundred twenty-two thousand, four hundred one".