698070869 has 2 divisors, whose sum is σ = 698070870. Its totient is φ = 698070868.

The previous prime is 698070859. The next prime is 698070913. The reversal of 698070869 is 968070896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518108644 + 179962225 = 22762^2 + 13415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698070869 is a prime.

It is a super-2 number, since 2×698070869² = 974605876292830322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 698070869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698070829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349035434 + 349035435.

It is an arithmetic number, because the mean of its divisors is an integer number (349035435).

Almost surely, 2^698070869 is an apocalyptic number.

It is an amenable number.

698070869 is a deficient number, since it is larger than the sum of its proper divisors (1).

698070869 is an equidigital number, since it uses as much as digits as its factorization.

698070869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 698070869 is about 26421.0308088083. The cubic root of 698070869 is about 887.0875926661.

The spelling of 698070869 in words is "six hundred ninety-eight million, seventy thousand, eight hundred sixty-nine".