698655 has 16 divisors (see below), whose sum is σ = 1142784. Its totient is φ = 364320.

The previous prime is 698653. The next prime is 698669. The reversal of 698655 is 556896.

It is not a de Polignac number, because 698655 - 2¹ = 698653 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698655.

It is not an unprimeable number, because it can be changed into a prime (698653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (71424).

2⁶⁹⁸⁶⁵⁵ is an apocalyptic number.

698655 is a deficient number, since it is larger than the sum of its proper divisors (444129).

698655 is a wasteful number, since it uses less digits than its factorization.

698655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046.

The product of its digits is 64800, while the sum is 39.

The square root of 698655 is about 835.8558488161. The cubic root of 698655 is about 88.7334955754.

The spelling of 698655 in words is "six hundred ninety-eight thousand, six hundred fifty-five".