698943853 has 2 divisors, whose sum is σ = 698943854. Its totient is φ = 698943852.

The previous prime is 698943827. The next prime is 698943863. The reversal of 698943853 is 358349896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414448164 + 284495689 = 20358^2 + 16867^2 .

It is a cyclic number.

It is not a de Polignac number, because 698943853 - 2⁵ = 698943821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698943794 and 698943803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698943863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349471926 + 349471927.

It is an arithmetic number, because the mean of its divisors is an integer number (349471927).

Almost surely, 2^698943853 is an apocalyptic number.

It is an amenable number.

698943853 is a deficient number, since it is larger than the sum of its proper divisors (1).

698943853 is an equidigital number, since it uses as much as digits as its factorization.

698943853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The square root of 698943853 is about 26437.5462741912. The cubic root of 698943853 is about 887.4572259488.

The spelling of 698943853 in words is "six hundred ninety-eight million, nine hundred forty-three thousand, eight hundred fifty-three".