696607217 has 2 divisors, whose sum is σ = 696607218. Its totient is φ = 696607216.

The previous prime is 696607213. The next prime is 696607259. The reversal of 696607217 is 712706696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622801936 + 73805281 = 24956^2 + 8591^2 .

It is a cyclic number.

It is not a de Polignac number, because 696607217 - 2² = 696607213 is a prime.

It is a super-2 number, since 2×696607217² = 970523229552970178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (696607213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348303608 + 348303609.

It is an arithmetic number, because the mean of its divisors is an integer number (348303609).

Almost surely, 2^696607217 is an apocalyptic number.

It is an amenable number.

696607217 is a deficient number, since it is larger than the sum of its proper divisors (1).

696607217 is an equidigital number, since it uses as much as digits as its factorization.

696607217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 696607217 is about 26393.3176580740. The cubic root of 696607217 is about 886.4671704460.

The spelling of 696607217 in words is "six hundred ninety-six million, six hundred seven thousand, two hundred seventeen".