697275881 has 2 divisors, whose sum is σ = 697275882. Its totient is φ = 697275880.

The previous prime is 697275809. The next prime is 697275911. The reversal of 697275881 is 188572796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567201856 + 130074025 = 23816^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 697275881 - 2¹⁰ = 697274857 is a prime.

It is a super-3 number, since 3×697275881³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (697277881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348637940 + 348637941.

It is an arithmetic number, because the mean of its divisors is an integer number (348637941).

Almost surely, 2^697275881 is an apocalyptic number.

It is an amenable number.

697275881 is a deficient number, since it is larger than the sum of its proper divisors (1).

697275881 is an equidigital number, since it uses as much as digits as its factorization.

697275881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The square root of 697275881 is about 26405.9819169824. The cubic root of 697275881 is about 886.7507157560.

The spelling of 697275881 in words is "six hundred ninety-seven million, two hundred seventy-five thousand, eight hundred eighty-one".