698426985 has 64 divisors (see below), whose sum is σ = 1221350400. Its totient is φ = 339593472.

The previous prime is 698426977. The next prime is 698427001. The reversal of 698426985 is 589624896.

It is not a de Polignac number, because 698426985 - 2³ = 698426977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

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 63 ways as a sum of consecutive naturals, for example, 1128006 + ... + 1128624.

It is an arithmetic number, because the mean of its divisors is an integer number (19083600).

Almost surely, 2^698426985 is an apocalyptic number.

It is an amenable number.

698426985 is a deficient number, since it is larger than the sum of its proper divisors (522923415).

698426985 is a wasteful number, since it uses less digits than its factorization.

698426985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its digits is 7464960, while the sum is 57.

The square root of 698426985 is about 26427.7692021101. The cubic root of 698426985 is about 887.2384142112.

The spelling of 698426985 in words is "six hundred ninety-eight million, four hundred twenty-six thousand, nine hundred eighty-five".