699196217 has 2 divisors, whose sum is σ = 699196218. Its totient is φ = 699196216.

The previous prime is 699196187. The next prime is 699196231. The reversal of 699196217 is 712691996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411927616 + 287268601 = 20296^2 + 16949^2 .

It is a cyclic number.

It is not a de Polignac number, because 699196217 - 2²² = 695001913 is a prime.

It is a super-2 number, since 2×699196217² = 977750699734222178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (699196717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349598108 + 349598109.

It is an arithmetic number, because the mean of its divisors is an integer number (349598109).

Almost surely, 2^699196217 is an apocalyptic number.

It is an amenable number.

699196217 is a deficient number, since it is larger than the sum of its proper divisors (1).

699196217 is an equidigital number, since it uses as much as digits as its factorization.

699196217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 50.

The square root of 699196217 is about 26442.3186766970. The cubic root of 699196217 is about 887.5640229420.

The spelling of 699196217 in words is "six hundred ninety-nine million, one hundred ninety-six thousand, two hundred seventeen".