698232109 has 4 divisors (see below), whose sum is σ = 739304604. Its totient is φ = 657159616.

The previous prime is 698232107. The next prime is 698232113. The reversal of 698232109 is 901232896.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225300100 + 472932009 = 15010^2 + 21747^2 .

It is not a de Polignac number, because 698232109 - 2¹ = 698232107 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698232103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20536222 + ... + 20536255.

It is an arithmetic number, because the mean of its divisors is an integer number (184826151).

Almost surely, 2^698232109 is an apocalyptic number.

It is an amenable number.

698232109 is a deficient number, since it is larger than the sum of its proper divisors (41072495).

698232109 is a wasteful number, since it uses less digits than its factorization.

698232109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41072494.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 698232109 is about 26424.0819897305. The cubic root of 698232109 is about 887.1558870655.

The spelling of 698232109 in words is "six hundred ninety-eight million, two hundred thirty-two thousand, one hundred nine".