698455085 has 4 divisors (see below), whose sum is σ = 838146108. Its totient is φ = 558764064.

The previous prime is 698455073. The next prime is 698455117. The reversal of 698455085 is 580554896.

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 127531849 + 570923236 = 11293^2 + 23894^2 .

It is a cyclic number.

It is not a de Polignac number, because 698455085 - 2¹⁴ = 698438701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69845504 + ... + 69845513.

It is an arithmetic number, because the mean of its divisors is an integer number (209536527).

Almost surely, 2^698455085 is an apocalyptic number.

It is an amenable number.

698455085 is a deficient number, since it is larger than the sum of its proper divisors (139691023).

698455085 is a wasteful number, since it uses less digits than its factorization.

698455085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139691022.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The square root of 698455085 is about 26428.3008345221. The cubic root of 698455085 is about 887.2503128853.

The spelling of 698455085 in words is "six hundred ninety-eight million, four hundred fifty-five thousand, eighty-five".