698468661 has 24 divisors (see below), whose sum is σ = 1127468160. Its totient is φ = 412987200.

The previous prime is 698468653. The next prime is 698468663. The reversal of 698468661 is 166864896.

It is not a de Polignac number, because 698468661 - 2³ = 698468653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698468598 and 698468607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698468663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81981 + ... + 90098.

It is an arithmetic number, because the mean of its divisors is an integer number (46977840).

Almost surely, 2^698468661 is an apocalyptic number.

It is an amenable number.

698468661 is a deficient number, since it is larger than the sum of its proper divisors (428999499).

698468661 is a wasteful number, since it uses less digits than its factorization.

698468661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172137 (or 172134 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 698468661 is about 26428.5576791470. The cubic root of 698468661 is about 887.2560613972.

The spelling of 698468661 in words is "six hundred ninety-eight million, four hundred sixty-eight thousand, six hundred sixty-one".