698850149 has 6 divisors (see below), whose sum is σ = 723095730. Its totient is φ = 674614416.

The previous prime is 698850137. The next prime is 698850167. The reversal of 698850149 is 941058896.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 557668225 + 141181924 = 23615^2 + 11882^2 .

It is not a de Polignac number, because 698850149 - 2²⁴ = 682072933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 698850097 and 698850106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698850169) 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 5 ways as a sum of consecutive naturals, for example, 139907 + ... + 144815.

It is an arithmetic number, because the mean of its divisors is an integer number (120515955).

Almost surely, 2^698850149 is an apocalyptic number.

It is an amenable number.

698850149 is a deficient number, since it is larger than the sum of its proper divisors (24245581).

698850149 is an frugal number, since it uses more digits than its factorization.

698850149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9847 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 698850149 is about 26435.7740382233. The cubic root of 698850149 is about 887.4175651530.

The spelling of 698850149 in words is "six hundred ninety-eight million, eight hundred fifty thousand, one hundred forty-nine".