698660 has 24 divisors (see below), whose sum is σ = 1482936. Its totient is φ = 276480.

The previous prime is 698653. The next prime is 698669. The reversal of 698660 is 66896.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 682276 = 128^2 + 826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 698660.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698660.

It is not an unprimeable number, because it can be changed into a prime (698669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (61789).

2⁶⁹⁸⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

698660 is an abundant number, since it is smaller than the sum of its proper divisors (784276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698660 is a wasteful number, since it uses less digits than its factorization.

698660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 698660 is about 835.8588397570. The cubic root of 698660 is about 88.7337072518.

The spelling of 698660 in words is "six hundred ninety-eight thousand, six hundred sixty".