698661243 has 48 divisors (see below), whose sum is σ = 1212868800. Its totient is φ = 379088640.

The previous prime is 698661241. The next prime is 698661247. The reversal of 698661243 is 342166896.

It is not a de Polignac number, because 698661243 - 2¹ = 698661241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698661241) 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 47 ways as a sum of consecutive naturals, for example, 108313 + ... + 114581.

It is an arithmetic number, because the mean of its divisors is an integer number (25268100).

Almost surely, 2^698661243 is an apocalyptic number.

698661243 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

698661243 is a deficient number, since it is larger than the sum of its proper divisors (514207557).

698661243 is a wasteful number, since it uses less digits than its factorization.

698661243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372 (or 6369 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 698661243 is about 26432.2008731774. The cubic root of 698661243 is about 887.3375987444.

The spelling of 698661243 in words is "six hundred ninety-eight million, six hundred sixty-one thousand, two hundred forty-three".