698086849 has 4 divisors (see below), whose sum is σ = 698546736. Its totient is φ = 697626964.

The previous prime is 698086801. The next prime is 698086853. The reversal of 698086849 is 948680896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 698086849 - 2¹³ = 698078657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 698086793 and 698086802.

It is not an unprimeable number, because it can be changed into a prime (698086349) 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 in 3 ways as a sum of consecutive naturals, for example, 227659 + ... + 230704.

It is an arithmetic number, because the mean of its divisors is an integer number (174636684).

Almost surely, 2^698086849 is an apocalyptic number.

It is an amenable number.

698086849 is a deficient number, since it is larger than the sum of its proper divisors (459887).

698086849 is a wasteful number, since it uses less digits than its factorization.

698086849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459886.

The product of its (nonzero) digits is 5971968, while the sum is 58.

The square root of 698086849 is about 26421.3332176860. Note that the first 3 decimals coincide. The cubic root of 698086849 is about 887.0943615832.

The spelling of 698086849 in words is "six hundred ninety-eight million, eighty-six thousand, eight hundred forty-nine".